{"id":55979,"date":"2020-06-22T13:53:03","date_gmt":"2020-06-22T12:53:03","guid":{"rendered":"https:\/\/groupe-reussite.fr\/?page_id=55979"},"modified":"2022-07-27T10:40:09","modified_gmt":"2022-07-27T09:40:09","slug":"cours-en-ligne-exercices-corriges-vitesse","status":"publish","type":"page","link":"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-exercices-corriges-vitesse\/","title":{"rendered":"Vitesse en physique exercices et corrig\u00e9s"},"content":{"rendered":"<div class=\"Latex_page\">\n<section class=\"has_ae_slider elementor-element elementor-section-full_width elementor-reverse-mobile elementor-section-stretched elementor-section-height-default elementor-section-height-default ae-bg-gallery-type-default elementor-section elementor-top-section\">\n<div class=\"elementor-container elementor-column-gap-no\">\n<div class=\"elementor-row\">\n<div class=\"elementor-column-wrap elementor-element-populated colone_elementor\">\n<p style=\"text-align: justify;\">\t\t<div data-elementor-type=\"page\" data-elementor-id=\"86176\" class=\"elementor elementor-86176\">\n\t\t\t\t\t\t<div class=\"elementor-inner\">\n\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t\t<section class=\"has_ae_slider elementor-section elementor-top-section elementor-element elementor-element-6f9fb2b3 elementor-section-content-bottom elementor-section-boxed elementor-section-height-default elementor-section-height-default ae-bg-gallery-type-default\" data-id=\"6f9fb2b3\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-5032621c sticky_badeau_colone strick_col ae-bg-gallery-type-default\" data-id=\"5032621c\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-column-wrap\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t<section class=\"has_ae_slider elementor-section elementor-top-section elementor-element elementor-element-611bd75f elementor-section-boxed elementor-section-height-default elementor-section-height-default ae-bg-gallery-type-default\" data-id=\"611bd75f\" data-element_type=\"section\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-no\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-100 elementor-top-column elementor-element elementor-element-55718945 strick_col ae-bg-gallery-type-default\" data-id=\"55718945\" data-element_type=\"column\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5940f45c elementor-widget elementor-widget-heading\" data-id=\"5940f45c\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<p class=\"elementor-heading-title elementor-size-default\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-tage-mage\/\">Cours en ligne Tage Mage <\/a><\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-f9bc725 elementor-widget elementor-widget-heading\" data-id=\"f9bc725\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<p class=\"elementor-heading-title elementor-size-default\">Chapitres du sous-test 2 du Tage Mage<\/p>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-56c02cf0 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"56c02cf0\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-fractions\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Fractions<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-390da5ff elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"390da5ff\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-pourcentages\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Pourcentages<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-da8d658 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"da8d658\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-exercices-corriges-algebre\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Alg\u00e8bre<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-490ac2aa elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"490ac2aa\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-figures-geometriques\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">G\u00e9om\u00e9trie<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-3fd40310 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"3fd40310\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-vitesse\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Vitesse<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6edf1c7e elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"6edf1c7e\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-arithmetique\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Arithm\u00e9tique<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-4f2c805 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"4f2c805\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-puissances\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Puissances<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-447b658 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"447b658\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-regle-de-trois\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Proportionnalit\u00e9<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-53863aa elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"53863aa\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-denombrement\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">D\u00e9nombrement<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-11741389 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"11741389\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-probabilites\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Probabilit\u00e9s<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-6ace8ace elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"6ace8ace\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-moyenne-arithmetique-moyenne-ponderee\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Moyenne<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-13f1db2f elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"13f1db2f\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-theoreme-de-pythagore\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Th\u00e9or\u00e8me de Pythagore<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-10d04684 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"10d04684\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-theoreme-de-thales\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Th\u00e9or\u00e8me de Thal\u00e8s<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-691a3a8a elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"691a3a8a\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-racines-carrees\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Racines Carr\u00e9es<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-2a5f7bd6 elementor-align-justify elementor-widget elementor-widget-button\" data-id=\"2a5f7bd6\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/nous-contacter\/\" class=\"elementor-button-link elementor-button elementor-size-sm\" role=\"button\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">CONTACTEZ-NOUS<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\n<\/div>\n<div class=\"elementor-column-wrap elementor-element-populated colone_latex\">\n<div class=\"style_pag\" style=\"color: #000; font-family: 'Lato', Sans-serif;\">\n<div class=\"elementor-text-editor elementor-clearfix\" style=\"color: #000000; font-family: Lato, sans-serif; text-align: justify;\">\n<h1 class=\"Latex_page_title\">Exercices sur la vitesse et ses formules<\/h1>\n<\/div>\n<p class=\"colone_latex_ancres\" style=\"color: #000000; font-family: Lato, sans-serif; text-align: center;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-vitesse\/\">R\u00e9sum\u00e9 de cours<\/a> <a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-exercices-corriges-vitesse\/\">Exercices et corrig\u00e9s<\/a><\/p>\n<p class=\"colone_latex_ancres\" style=\"color: #000000; font-family: Lato, sans-serif; text-align: center;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-tage-mage\/\">Cours en ligne du Tage Mage<\/a><\/p>\n<p style=\"text-align: justify;\">Une fois les formules sur les vitesses connues, le travail n&rsquo;est encore qu&rsquo;\u00e0 moiti\u00e9 fait puisqu&rsquo;il faut s\u2019entra\u00eener \u00e0 appliquer ces formules dans des cas concrets en exercice. Quel que soit l&rsquo;examen \u00e0 passer, ce ne sera jamais une r\u00e9citation du cours mais plut\u00f4t une application des formules par des exercices. Ces exercices pourront vous \u00eatre grandement utile lors de la pr\u00e9paration au Tage Mage ou encore pour la pr\u00e9pa du Score IAE Message.<\/p>\n<p style=\"text-align: justify;\"><strong>A noter<\/strong> :<br \/>\nNous avons volontairement propos\u00e9 certaines questions sans propositions (qcm) pour que chacun puisse rechercher la r\u00e9ponse sans \u00eatre guid\u00e9. Ceci constitue un bon exercice notamment pour la pr\u00e9pa du Tage Mage.<\/p>\n<h2 style=\"text-align: justify;\">Exercices d&rsquo;applications sur les vitesses<\/h2>\n<h3 style=\"text-align: justify;\">Question 1 : dur\u00e9e d&rsquo;un trajet en heures et minutes<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Une voiture a parcouru 120 km \u00e0 la vitesse de 72 km\/h. Combien de temps a-t-elle roul\u00e9 ? Exprimer le r\u00e9sultat en heure et minute.<\/p>\n<h3 style=\"text-align: justify;\">Question 2 : impacte d&rsquo;une augmentation de vitesse sur le trajet<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Patrick met 2 heures pour aller chez ses parents en roulant \u00e0 son rythme ordinaire. S\u2019il roule trois fois plus vite, combien de temps va-t-il mettre ? Exprimer le r\u00e9sultat en heure et minute.<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">A) 1h20<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">B) 4h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">C) 1h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">D) 40 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">E) 45 mn<\/p>\n<h3 style=\"text-align: justify;\">Question 3 : vitesse moyenne sur l&rsquo;ensemble d&rsquo;un trajet aller \/ retour<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Le matin, pour se rendre \u00e0 son travail, Karima roule \u00e0 50 km\/h en <a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-moyenne-arithmetique-moyenne-ponderee\/\">moyenne<\/a> pendant 30 minutes. Le soir, elle emprunte une autre route et roule \u00e0 35 km\/h en moyenne pendant une heure. Quelle est sa vitesse moyenne sur l\u2019ensemble de son trajet aller\/retour ?<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">A) 38 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">B) 40 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">C) 42,5 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">D) 45 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">E) 47,5 km\/h<\/p>\n<h3 style=\"text-align: justify;\">Question 4 : Vitesse en km\/h<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Un coureur parcourt 200 m\u00e8tres en 50 secondes. Quelle est sa vitesse en km\/h ?<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">A) 10,5 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">B) 12,4 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">C) 14,4 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">D) 16 km\/h<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">E) 18,8 km\/h<\/p>\n<h3 style=\"text-align: justify;\">Question 5 : kilom\u00e8tres parcourus en minutes<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Florian parcourt m kilom\u00e8tres en n heures. En conservant ce rythme, combien de kilom\u00e8tres Florian parcourt-il en p minutes ?<\/p>\n<p style=\"text-align: justify;\">A) <span style=\"font-weight: 400;\"><img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-603aa5ea802c8fed2f0ff5bd247d8340_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#112;&#125;&#123;&#110;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"25\" style=\"vertical-align: -12px;\"\/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">B) <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-9237c7360f61e9090531291a058c79f3_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#112;&#125;&#123;&#54;&#48;&#110;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"29\" style=\"vertical-align: -12px;\"\/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">C) <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-4197adc56017a7c52a585a009ca34632_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#125;&#123;&#54;&#48;&#110;&#112;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"38\" style=\"vertical-align: -16px;\"\/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">D) <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-e3802f41e98df6dbefb467a145d99062_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#110;&#125;&#123;&#54;&#48;&#109;&#112;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"43\" style=\"vertical-align: -16px;\"\/><\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">E) <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-8e90ac982c32b3d23040c34dbbbaf3d9_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#110;&#112;&#125;&#123;&#54;&#48;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"36\" style=\"vertical-align: -12px;\"\/><\/span><\/p>\n<h3 style=\"text-align: justify;\">Question 6 : consommation d&rsquo;essence<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">La voiture de Yosri consomme 6 litres d\u2019essence aux 100 kilom\u00e8tres en roulant \u00e0 80 km\/h. Son r\u00e9servoir peut contenir 51 litres et est rempli aux 12\/17 de sa capacit\u00e9 maximale. Yosri roule 3h30 \u00e0 la vitesse moyenne de 80km\/h puis roule 2h \u00e0 96 km\/h. Sachant que la consommation d\u2019essence est strictement <strong>proportionnelle<\/strong> \u00e0 la vitesse, combien d\u2019essence, en litres, reste-t-il environ \u00e0 l\u2019issue de son trajet ?<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">A) 2<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">B) 3<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">C) 5<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">D) 7<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">E) 9<\/p>\n<h3 style=\"text-align: justify;\">Question 7 : dur\u00e9e d&rsquo;une pause lors d&rsquo;un trajet<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Une famille quitte son domicile \u00e0 8h30 en direction de leur maison de campagne situ\u00e9e \u00e0 530 km de chez eux. Ils roulent pendant 2h15 \u00e0 une vitesse moyenne de 120 km\/h. Ils font alors une pause puis finissent leur trajet sur une route d\u00e9partementale \u00e0 une vitesse moyenne de 80 km\/h. Sachant qu\u2019ils sont arriv\u00e9s \u00e0 14h20, combien de temps \u00e0 dur\u00e9 leur pause ?<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">A) 40 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">B) 20 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">C) 18 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">D) 15 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">E) 12 mn<\/p>\n<p>&nbsp;<\/p>\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"84983\" class=\"elementor elementor-84983\">\n\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t<section class=\"has_ae_slider elementor-section elementor-inner-section elementor-element elementor-element-51d9c4d elementor-section-content-bottom full_width elementor-section-full_width elementor-section-height-min-height elementor-section-height-default ae-bg-gallery-type-default\" data-id=\"51d9c4d\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-narrow\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-610eeeb9 ae-bg-gallery-type-default\" data-id=\"610eeeb9\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-5bf69eb8 elementor-widget elementor-widget-heading\" data-id=\"5bf69eb8\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">COURS DE MATHS<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-49568da4 elementor-widget elementor-widget-heading\" data-id=\"49568da4\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Les meilleurs professeurs particuliers<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1eb9e0cb elementor-widget elementor-widget-heading\" data-id=\"1eb9e0cb\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Pour progresser et r\u00e9ussir<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-15c3e28d elementor-align-left elementor-mobile-align-center elementor-widget elementor-widget-button\" data-id=\"15c3e28d\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/cours-particuliers\/maths\/tous-niveaux\/france\/\" target=\"_blank\" class=\"elementor-button-link elementor-button elementor-size-md\" role=\"button\" id=\"CTA_PRD_CP\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Cours particuliers maths<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1a5c10e7 elementor-widget elementor-widget-text-editor\" data-id=\"1a5c10e7\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p style=\"text-align: left\"><b>Avis Google France <\/b><span style=\"color: #e5a430\"><b>\u2605\u2605\u2605\u2605\u2605<\/b><\/span><b> 4,9 sur 5<\/b><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-6913d4fe ae-bg-gallery-type-default\" data-id=\"6913d4fe\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<p>&nbsp;<\/p>\n<h2 class=\"p1\" style=\"text-align: justify;\">2. Corrig\u00e9s des exercices sur la vitesse <span style=\"text-align: justify; color: #333333; font-family: Georgia, 'Times New Roman', 'Bitstream Charter', Times, serif;\">\u00a0<\/span><\/h2>\n<h3 style=\"text-align: justify;\">Question 1 : R\u00e9ponse 1h40mn<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><strong>R\u00e9flexe<\/strong> :\u00a0 <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-e465b68a5e62695604eb3892d5dddf6c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"9\" style=\"vertical-align: -12px;\"\/>h = 20 mn<\/p>\n<p class=\"p1\" style=\"text-align: justify;\">On applique simplement la formule : Temps = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-78e30346aa8aa66cdc1bc95c6344aac5_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#68;&#105;&#115;&#116;&#97;&#110;&#99;&#101;&#125;&#123;&#86;&#105;&#116;&#101;&#115;&#115;&#101;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"72\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-9c0a512d6ed7fe2a0a235c8755158185_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#50;&#48;&#125;&#123;&#55;&#50;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"27\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-3534bc5f5490b11d585bf29a64a048e8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#54;&#48;&#125;&#123;&#51;&#54;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"18\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-ee1e7573323f54435afeebc25387fa9a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#48;&#125;&#123;&#54;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"18\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-6b5003257630ad311f09a4db90f9846c_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#53;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"9\" style=\"vertical-align: -12px;\"\/>h = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-ed3f759837380c4e5332811a2eabdd78_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#51;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"9\" style=\"vertical-align: -12px;\"\/> + <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-91882232fdea0b2c45b4c09753972487_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#50;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"9\" style=\"vertical-align: -12px;\"\/> soit 1h 40 minutes.<\/p>\n<h3 style=\"text-align: justify;\">Question 2 : R\u00e9ponse D<\/h3>\n<p style=\"text-align: justify;\">La vitesse et le temps sont inversement proportionnels : si on va 2 fois <strong>plus vite<\/strong>, on met 2 fois <strong>moins de temps<\/strong>.<\/p>\n<p style=\"text-align: justify;\">Ici il va 3 fois <strong>plus<\/strong> vite, il va donc mettre 3 fois <strong>moins<\/strong> de temps. Donc on divise le temps par 3, soit 2h \u00f7 3 donc <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-91882232fdea0b2c45b4c09753972487_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#50;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"9\" style=\"vertical-align: -12px;\"\/> ou encore 40 minutes.<\/p>\n<h3 style=\"text-align: justify;\">Question 3 : R\u00e9ponse B<\/h3>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Rappel : <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-b26b1166593118336c38d57cc873b657_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#86;&#95;&#123;&#77;&#111;&#121;&#101;&#110;&#110;&#101;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"18\" width=\"67\" style=\"vertical-align: -6px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-6ecca92dfbf2b40ca51fade9bfe443ea_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#68;&#105;&#115;&#116;&#97;&#110;&#99;&#101;&#126;&#116;&#111;&#116;&#97;&#108;&#101;&#125;&#123;&#84;&#101;&#109;&#112;&#115;&#126;&#116;&#111;&#116;&#97;&#108;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"123\" style=\"vertical-align: -16px;\"\/><\/span><\/p>\n<p style=\"text-align: justify;\">\u2022 A l\u2019aller : elle roule \u00e0 50 km\/h pendant 30 mn, elle a donc parcouru 25 km.<br \/>\n\u2022 Au retour : elle roule \u00e0 35 km\/h pendant 1 h, elle a donc parcouru 35 km<br \/>\nOn en d\u00e9duit :\u00a0 Vitesse moyenne = <span style=\"font-weight: 400;\"><img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-f0a12208af273c6ad00153be0675fc83_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#50;&#53;&#126;&#43;&#126;&#51;&#53;&#125;&#123;&#48;&#44;&#53;&#126;&#43;&#126;&#49;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"41\" width=\"69\" style=\"vertical-align: -16px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-4617e2c71cd2cb6cd955744cb6fa29c1_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#54;&#48;&#125;&#123;&#49;&#44;&#53;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"40\" width=\"26\" style=\"vertical-align: -16px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-5746ae570c553c58801d39c507837b19_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#50;&#48;&#125;&#123;&#51;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"27\" style=\"vertical-align: -12px;\"\/> = 40 km\/h<\/span><\/p>\n<h3 style=\"text-align: justify;\">Question 4 : R\u00e9ponse C<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Rappel sur la conversion : <\/span><span style=\"font-weight: 400;\">m\/s x 3,6 = km\/h et km\/h <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-ea134507bb0dd8200c74b73e133b84e7_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#105;&#118;\" title=\"Rendered by QuickLaTeX.com\" height=\"10\" width=\"13\" style=\"vertical-align: 0px;\"\/> 3,6 = m\/s<\/span><\/p>\n<p style=\"text-align: justify;\"><em>M\u00e9thode 1<\/em> : on sait comment passer des m\/s aux km\/h<br \/>\nSi en 50 secondes il parcourt 200 m\u00e8tres<br \/>\nAlors en 1 seconde, il parcourt 4 m\u00e8tres (50 fois moins).<br \/>\nDonc sa vitesse est de 4 m\/s. Pour la convertir en km\/h, on multiplie par 3,6.<br \/>\nEt, 4\u00d73,6 = 14,4 km\/h. d\u00e9tail du calcul : multiplier par 4 c\u2019est multiplier par 2 puis encore par 2. Or 3,6 \u00d7 2 = 7,2 et 7,2 \u00d7 2 = 14,4.<\/p>\n<p style=\"text-align: justify;\"><em>M\u00e9thode 2<\/em> : Convertir de proche en proche.<br \/>\nkm\/h signifie, combien de kilom\u00e8tres en 1h ? Il faut donc \u00ab passer \u00bb de 50 secondes \u00e0 1h et donc impacter la distance parcourue.<br \/>\nEn 50 secondes, il parcourt 200 m\u00e8tres<br \/>\nEn 300 secondes il parcourt 1 200 m\u00e8tres (6 fois plus)<br \/>\nOr 300 s = 5 mn et 5mn = 1\/12 h<br \/>\n<strong>Donc en 1h<\/strong>, il parcourt 12 fois plus qu\u2019en 5 minutes et 1 200 \u00d7 12 = 14 400 m = <strong>14,4 km<\/strong>. Et donc une vitesse de 14,4 km\/h.<\/p>\n<h3 style=\"text-align: justify;\">Question 5 : R\u00e9ponse B<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">C\u2019est une question de vitesse mais qui fait appelle \u00e0 la <a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-regle-de-trois\/\">proportionnalit\u00e9<\/a> et au <strong>calcul litt\u00e9ral<\/strong>.<br \/>\nOn a le nombre de kilom\u00e8tres parcouru pour n heures<br \/>\nOn va trouver le nombre de kilom\u00e8tres pour 1 heure puis pour 1 minute avant de d\u00e9terminer pour p minutes.<br \/>\nEn n heures, il parcourt m km<br \/>\nDonc en 1 heure, il parcourt n fois moins, soit <span style=\"font-weight: 400;\"><img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-63c7ae9bb609f4bfa17a2b5f4461a3d8_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#125;&#123;&#110;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"16\" style=\"vertical-align: -12px;\"\/> km. Et donc en 1 minute, 60 fois moins, donc on divise par 60. Autrement dit, en 1 minute il parcourt <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-594c275841c8e7c001a4d844dbabe1dd_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#125;&#123;&#54;&#48;&#110;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"32\" width=\"29\" style=\"vertical-align: -12px;\"\/> km.\u00a0<\/span><\/p>\n<p style=\"text-align: justify;\">Finalement pour p minutes, on multiplie par p ce qui donne : <span style=\"font-weight: 400;\"><img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-4197adc56017a7c52a585a009ca34632_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#109;&#125;&#123;&#54;&#48;&#110;&#112;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"38\" style=\"vertical-align: -16px;\"\/> km.\u00a0<\/span><\/p>\n<h3 style=\"text-align: justify;\">Question 6 : R\u00e9ponse C<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Tout d\u2019abord calculons le <a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-series-lettres-nombres\/\">nombre<\/a> de litres dans le r\u00e9servoir : on sait que 17\u00d73=51. Donc 1\/17 de 51 vaut 3. On en d\u00e9duit que 12\/17 vaut 12\u00d73=36 litres.<br \/>\nSur la 1\u00e8re partie, il roule 3,5h \u00e0 80 km\/h, il parcourt donc 3,5\u00d780=280 km.<br \/>\nOr pour 100 km, le voiture consomme 6 litres, et 280 km correspond \u00e0 2,8\u00d7100, donc elle consomme 6\u00d72,8 soit 16,8 litres.<br \/>\nEnsuite sa consommation augmente car il roule plus vite. Il fallait remarquer que 80\u00d7<strong>1,2<\/strong>=96 (car on sait que 8\u00d712=96). Donc \u00e0 96 km\/h, la consommation est multipli\u00e9e par 1,2, elle devient 6\u00d71,2=7,2 litres aux 100 km. Or il parcourt <strong>environ<\/strong> 200 km (2h \u00e0 96 km\/h) donc va consommer environ 14 litres.<br \/>\nAu total la voiture consomme 14+16,8 soit 30,8 litres. Il y en avait 36 au d\u00e9part, il en reste donc environ 5. Etant donn\u00e9 que parmi les propositions il n\u2019y a ni 4, ni 6, on choisit C sereinement.<\/p>\n<h3 style=\"text-align: justify;\">Question 7 : R\u00e9ponse B<\/h3>\n<p class=\"p1\" style=\"text-align: justify;\">Calculons la distance parcourue sur la 1\u00e8re partie du trajet : 2h15mn<br \/>\nA 120 km\/h :<br \/>\n\u2022 ils parcourent 240 km en 2h.<br \/>\n\u2022 En 15 mn soit 1\/4 h ils parcourent 30 km (un quart de 120).<br \/>\nDonc en 2h15mn ils ont parcouru 270 km.<br \/>\nIl leur reste donc 530-270=260 km \u00e0 parcourir \u00e0 la vitesse de 80 km\/h, donc le temps mis est :<\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">T = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-0e25b9b0016ffbd2a5ffef933722d78e_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#68;&#125;&#123;&#86;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"16\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-8337ca4649423b783290c24875b3f126_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#50;&#54;&#48;&#125;&#123;&#56;&#48;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"27\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-8213c79683e0a10487d7c88b2012b51b_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#50;&#54;&#125;&#123;&#56;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"18\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-eff339abe9ac04a8f077249157365987_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#51;&#125;&#123;&#52;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"18\" style=\"vertical-align: -12px;\"\/> = <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-4b1b8b4291db14660c684be3f40f2d63_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#50;&#125;&#123;&#52;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"36\" width=\"18\" style=\"vertical-align: -12px;\"\/> + <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-fec3a9d3b8444d728f2d9088ba1f3f5a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#125;&#123;&#52;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"9\" style=\"vertical-align: -13px;\"\/> = 3 + <img loading=\"lazy\" src=\"https:\/\/groupe-reussite.fr\/ressources\/wp-content\/ql-cache\/quicklatex.com-fec3a9d3b8444d728f2d9088ba1f3f5a_l3.png\" class=\"ql-img-inline-formula quicklatex-auto-format\" alt=\"&#92;&#100;&#102;&#114;&#97;&#99;&#32;&#123;&#49;&#125;&#123;&#52;&#125;\" title=\"Rendered by QuickLaTeX.com\" height=\"37\" width=\"9\" style=\"vertical-align: -13px;\"\/>h soit 3h15mn. <\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Ils ont donc roul\u00e9 2h15+3h15 soit 5h30 que l\u2019on ajoute \u00e0 8h30 on obtient 14h. <\/span><\/p>\n<p style=\"text-align: justify;\"><span style=\"font-weight: 400;\">Or ils sont arriv\u00e9s \u00e0 14h20, la pause a donc dur\u00e9 20 min. Il est n\u00e9cessaire ici de bien ma\u00eetriser les <a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-fractions\/\">calculs sur les fractions<\/a>.\u00a0<\/span><\/p>\n\t\t<div data-elementor-type=\"section\" data-elementor-id=\"127774\" class=\"elementor elementor-127774\">\n\t\t\t\t\t<div class=\"elementor-section-wrap\">\n\t\t\t\t\t\t\t\t<section class=\"has_ae_slider elementor-section elementor-inner-section elementor-element elementor-element-5a7b6a2a elementor-section-content-bottom full_width elementor-section-full_width elementor-section-height-min-height elementor-section-height-default ae-bg-gallery-type-default\" data-id=\"5a7b6a2a\" data-element_type=\"section\" data-settings=\"{&quot;background_background&quot;:&quot;classic&quot;}\">\n\t\t\t\t\t\t<div class=\"elementor-container elementor-column-gap-narrow\">\n\t\t\t\t\t\t\t<div class=\"elementor-row\">\n\t\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-66 elementor-inner-column elementor-element elementor-element-749af387 ae-bg-gallery-type-default\" data-id=\"749af387\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap elementor-element-populated\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t<div class=\"elementor-element elementor-element-1b4ed465 elementor-widget elementor-widget-heading\" data-id=\"1b4ed465\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h3 class=\"elementor-heading-title elementor-size-default\">COURS PARTICULIERS EN LIGNE<\/h3>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-16d47760 elementor-widget elementor-widget-heading\" data-id=\"16d47760\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">Nous avons s\u00e9lectionn\u00e9 pour vous les meilleurs professeurs particuliers.<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-21a162bf elementor-widget elementor-widget-heading\" data-id=\"21a162bf\" data-element_type=\"widget\" data-widget_type=\"heading.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<h4 class=\"elementor-heading-title elementor-size-default\">POUR ACC\u00c9L\u00c9RER MA PROGRESSION<\/h4>\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-5600477e elementor-align-left elementor-mobile-align-center elementor-widget elementor-widget-button\" data-id=\"5600477e\" data-element_type=\"widget\" data-widget_type=\"button.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"elementor-button-wrapper\">\n\t\t\t<a href=\"https:\/\/groupe-reussite.fr\/cours-en-ligne\/toutes-matieres\/tous-niveaux\/france\/\" target=\"_blank\" class=\"elementor-button-link elementor-button elementor-size-md\" role=\"button\" id=\"CTA_PRD_CP\">\n\t\t\t\t\t\t<span class=\"elementor-button-content-wrapper\">\n\t\t\t\t\t\t<span class=\"elementor-button-text\">Cours particuliers en ligne<\/span>\n\t\t<\/span>\n\t\t\t\t\t<\/a>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<div class=\"elementor-element elementor-element-1c7a7876 elementor-widget elementor-widget-text-editor\" data-id=\"1c7a7876\" data-element_type=\"widget\" data-widget_type=\"text-editor.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t\t\t\t<div class=\"elementor-text-editor elementor-clearfix\">\n\t\t\t\t<p style=\"text-align: left;\"><b>Avis Google France <\/b><span style=\"color: #e5a430;\"><b>\u2605\u2605\u2605\u2605\u2605<\/b><\/span><b> 4,9 sur 5<\/b><\/p>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t<div class=\"has_ae_slider elementor-column elementor-col-33 elementor-inner-column elementor-element elementor-element-2aa12288 ae-bg-gallery-type-default\" data-id=\"2aa12288\" data-element_type=\"column\">\n\t\t\t<div class=\"elementor-column-wrap\">\n\t\t\t\t\t\t\t<div class=\"elementor-widget-wrap\">\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t<\/section>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\n<p>&nbsp;<\/p>\n<p style=\"text-align: justify;\">Parce que r\u00e9viser seul n&rsquo;est pas toujours simple, nous vous proposons de nombreux cours en ligne pour r\u00e9ussir le sous-test 2 du Tage Mage, d\u00e9couvrez par exemple, les cours suivants accessibles gratuitement :<\/p>\n<ul>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-arithmetique\/\">l&rsquo;arithm\u00e9tique<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-puissances\/\">les puissances<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-regle-de-trois\/\">la proportionnalit\u00e9<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-denombrement\/\">le d\u00e9nombrement<\/a><\/li>\n<li style=\"text-align: justify;\"><a href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-probabilites\/\">les probabilit\u00e9s<\/a><\/li>\n<\/ul>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/section>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>Exercices sur la vitesse et ses formules R\u00e9sum\u00e9 de cours Exercices et corrig\u00e9s Cours en ligne du Tage Mage Une fois les formules sur les vitesses connues, le travail n&rsquo;est encore qu&rsquo;\u00e0 moiti\u00e9 fait puisqu&rsquo;il faut s\u2019entra\u00eener \u00e0 appliquer ces formules dans des cas concrets en exercice. Quel que soit l&rsquo;examen \u00e0 passer, ce ne [&hellip;]<\/p>\n","protected":false},"author":6,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v20.2.1 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Exercices corrig\u00e9s sur les formules de la vitesse en physique.<\/title>\n<meta name=\"description\" content=\"Une s\u00e9rie d&#039;exercices sur la vitesse qui demande d&#039;appliquer les m\u00e9thodes et les formules vues en cours sur des cas pratiques.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/groupe-reussite.fr\/ressources\/cours-en-ligne-exercices-corriges-vitesse\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" 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