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A small sphere of mass 1 kg is moving wi...

A small sphere of mass 1 kg is moving with a velocity `(6hat(i)+hat(j))ms^(-1)`. It hits a fixed smooth wall and rebound with velocity `(4hat(i)+hat(j))ms^(-1)`. The coefficient of restitution between the sphere and the wall is

A

`3//2`

B

`2//3`

C

`9//16`

D

`4//9`

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A
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