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A particle of mass m is moving horizonta...

A particle of mass `m` is moving horizontally with a constant velocity `v` towards a rigid wall that is moving in opposite direction with a constant speed `u`. Assuming elastic impact between the particle and wall, the work done by the wall in reflecting the particle is equal to

A

`(1//2)m(u+v)^(2)`

B

`(1//2)m(u^(2)+v^(2))`

C

`(1//2)muv`

D

None of these

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Verified by Experts

The correct Answer is:
D
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