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11 September, 23:15

A 328-kg car moving at 19.1 m/s in the + x direction hits from behind a second car moving at 13.0 m/s in the same direction. If the second car has a mass of 790 kg and a speed of 15.1 m/s right after the collision, what is the velocity of the first car after this sudden collision?

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  1. 11 September, 23:23
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    +14.0 m/s

    Explanation:

    we have mV + Mv = mU + Mu we solve for U = (mV + Mv - Mu) / m = (328*19.1 + 790*13 - 790*15.1) / 328 = 14. Answer
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