{"id":1208,"date":"2022-05-05T15:28:09","date_gmt":"2022-06-24T09:49:58","guid":{"rendered":"https:\/\/experiments.school\/?post_type=product&p=1208"},"modified":"2022-07-01T10:13:26","modified_gmt":"2022-07-01T08:13:26","slug":"170-parabole-de-projection","status":"publish","type":"product","link":"https:\/\/experiments.school\/fr\/produkt\/170-parabole-de-projection\/","title":{"rendered":"170 – Parabole de projection"},"content":{"rendered":"","protected":false},"excerpt":{"rendered":"

Lancer oblique\u00a0\u00a0<\/strong><\/h2>\n

Trajectoire d’un projectile\u00a0\u00a0<\/strong><\/h2>\n

Introduction a:<\/span><\/h2>\n

Balistique, parabole, trajectoire\u00a0<\/span>\u00a0<\/span><\/p>\n[video width=\"1920\" height=\"1080\" mp4=\"https:\/\/experiments.school\/wp-content\/uploads\/2022\/05\/170-video-2.mp4\"][\/video]\n

<\/h2>\n

Mat\u00e9riel:<\/span><\/h2>\n
    \n
  • Tuyau d’eau \/ tuyau d’arrosage \/ lance \u00e0 eau\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n

    Le film montre un jet d’eau tr\u00e8s puissant g\u00e9n\u00e9r\u00e9 par une pompe pour faire circuler l’eau dans un \u00e9tang.\u00a0<\/span>\u00a0<\/span><\/p>\n

    Instructions:\u00a0<\/span>\u00a0<\/span><\/h2>\n

    Veille \u00e0 ce que le jet d’eau soit \u00e9troit mais puissant. Maintiens la buse inclin\u00e9e vers le haut.\u00a0<\/span>\u00a0<\/span><\/p>\n

    Observation:\u00a0<\/span>\u00a0<\/span><\/h2>\n

    Le jet d’eau forme un arc parabolique.<\/span>\u00a0<\/span><\/p>\n

    Conseil:\u00a0<\/span>\u00a0<\/span><\/h2>\n

    R\u00e9cup\u00e8re le jet dans une grande cuvette ou fais l’exp\u00e9rience \u00e0 l’ext\u00e9rieur.\u00a0\u00a0<\/span>\u00a0<\/span><\/p>\n

    Potentiel didactique:<\/span><\/h2>\n
      \n
    • En supposant une acc\u00e9l\u00e9ration constante de la chute, la trajectoire peut \u00eatre d\u00e9duite th\u00e9oriquement. La \u00ab\u00a0m\u00e9thode des petits pas\u00a0\u00bb, une m\u00e9thode d’approximation num\u00e9rique, permet \u00e9galement de bien la simuler.\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Une \u00ab\u00a0machine \u00e0 lancer\u00a0\u00bb, que l’on peut construire soi-m\u00eame avec un peu d’effort, peut amener un projectile \u00e0 l’objectif en suivant une trajectoire parabolique.\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Convient pour la physique holistique, c’est-\u00e0-dire pour une interaction entre la th\u00e9orie, la simulation et l’exp\u00e9rimentation.\u00a0<\/span>\u00a0<\/span><\/li>\n
    • Convient particuli\u00e8rement bien pour enthousiasmer les gar\u00e7ons, car ils ont souvent un int\u00e9r\u00eat particulier pour le lancer et le tir.\u00a0<\/span>\u00a0<\/span><\/li>\n<\/ul>\n","protected":false},"featured_media":1582,"template":"","meta":[],"product_brand":[],"product_cat":[937,913,919,922,928,699],"product_tag":[],"class_list":{"0":"post-1208","1":"product","2":"type-product","3":"status-publish","4":"has-post-thumbnail","6":"product_cat-12-gravitation-fr","7":"product_cat-4-vitesse-acceleration-inertie","8":"product_cat-6-chute-libre-chute-avec-resistance-de-lair","9":"product_cat-7-lancer-horizontal-lancer-incline","10":"product_cat-9-formes-denergie-conservation-de-lenergie","11":"product_cat-a-mecanique","12":"","13":"woocommerce-text-align-left","14":"woocommerce-image-align-center","16":"first","17":"instock","18":"shipping-taxable","19":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product\/1208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/types\/product"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/media\/1582"}],"wp:attachment":[{"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/media?parent=1208"}],"wp:term":[{"taxonomy":"product_brand","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_brand?post=1208"},{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_cat?post=1208"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/experiments.school\/fr\/wp-json\/wp\/v2\/product_tag?post=1208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}