A sphere A impinges directly on an identical sphere B at rest. If e is the coefficient of restitution then the ratio of the velocities of A and B after impact is
A
1+e1−e
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B
1−e1+e
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C
e1−e
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D
e1+e
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Solution
The correct option is B1−e1+e
Let vA & vB be the below their after collection in the same direction by momentum conservation