td1ex4cinematique.py

Created on April 22, 2025

498 Bytes

Exercice 4.
Lors d’un sprint effectué en salle, les coureurs disposent de seulement 20m pour s’arrêter. Ils
passent la ligne d’arrivée à 10m.s-1
.
1) Réalisez un bilan des paramètres
2) En considérant la décélération constante, calculez le temps dont ils disposent pour s’arrêter
si ils souhaitent se freiner « par leurs propres moyens », en terminant à 0 m/s au contact du
tapis.


reponse :
1) v=0  x0=0  t0=0
   v0=10  x=20  t=?
   
2) 10*t/2=20
t=20*2/10=4s

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