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likoan [24]
3 years ago
6

Car 1 of mass m1 is waiting at a traffic light.

Physics
1 answer:
Rina8888 [55]3 years ago
8 0

Answer:

Explanation:

Conservation of momentum

2500(0) + 1000(30) = (2500 + 1000)v

v = 8.57 m/s

KE = ½(2500 + 1000)8.57² = 128,571.428... = 128 KJ

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