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two equal mass cars collide head to tail and their bumpers lock. One car has a velocity of 10m/s and the other is at rest. what is the velocity of the two cars after the collision?

  • physics -

    initial momentum = 10 m + 0 = 10 m
    so final momentum = 10 m
    m v + m v = 10 m
    2 v = 10
    v = 5

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