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  1. A ball of mass 1 kg moving with a velocity 2 m/s collides directly with a m2 stationary ball of mass 2 kg. If the first ball comes to rest after the impact, what is the velocity of the second ball after impact ?

    2. A.
    1.0 m/s
    B.
    zero
    C.
    2 m/s
    D.
    0.5 m/s

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    Answer : Option A

    Explanation :

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