lolo8727 lolo8727

11-05-2024
Physics

Answered

2
1. Aide Balan à terminer le tableau avec les informations suivantes:
- formule de l'énergie cinétique: Ec =
- masse de la voiture: m = 1 200
kg.
m/s
xmx v²;
Les vitesses v en m/s (deuxième ligne du tableau) seront arrondies à 0,1 près.
2. Balan a trouvé dans une revue de cinéma une
photographie du cadran du
comp-
teur de
vitesse de la voiture juste
avant qu'elle ne percute le mur.
120
40
ED
20
100
180
200
220
2-0
0
DAGAAAA
280
R
260
Quelle était l'énergie cinétique de la voiture au moment du «crash >> contre le
mur?
Pouvez vous m’aider à y répondre ?

Answer :

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