Two balls of equal mass have a head on collision with speed 4 ms-1 each travelling in opposite directions. If the coefficient of restitution is 1/2, the speed of each ball after impact will be

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1 ms-1

2 ms-1

3 ms-1

data insufficient

answer is B.

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Detailed Solution

Relative speed of approach is 8 ms-1, e = 12. Therefore, relative speed of separation will be 4 ms-1.

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