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A solid sphere rolling on a rough horizo...

A solid sphere rolling on a rough horizontl surface with a lilner speed v collides elastically with a fixed, smooth, vertical wall. Find the speed of the sphere after it has started pure rolling in the backward direction.

A

`3v//7`

B

`5v//7`

C

`2v//7`

D

None of these

Text Solution

Verified by Experts

The correct Answer is:
A
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