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     EduGorilla 
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    A ball of mass m, moving with a constant velocity, collides with another identical ball at rest. After the collision, the first ball acquires velocity v1 and the second ball that was at rest before collision acquires velocity v2. If the coefficient of restitution is given to be 5/7, what will be the ratio v1 : v2?

    Options :-

    1. 1 : 7
    2. 6 : 7
    3. 1 : 6
    4. 6 : 1
    5. None of these
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