Exercice 1 :
Pierre conduit une voiture à vitesse constante sur une portion
d’autoroute...
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Exercice 1 :
Pierre conduit une voiture à vitesse constante sur une portion
d’autoroute rectiligne.
Il parcourt 450 m pendant une durée égale à 9500 ms. Puis, à
la même vitesse, il aborde un virage en arc de cercle.
1. Calculer la vitesse de Pierre dans :
a) Le référentiel lié à la voiture.
b) Le référentiel lié à la route.
2. Quelle est la trajectoire de Pierre dans le référentiel lié à la
route ?
3. En déduire la nature du mouvement de Pierre dans ce
même référentiel.
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