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A smooth sphere A is moving on a frictio...

A smooth sphere A is moving on a frictionless horizontal plane with angular speed `omega` and centre of mass velocity `upsilon`. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are `omega_A and omega_B` respectively. Then

A

`w_(A) lt w_(B)`

B

`w_(A) = w_(B)`

C

`w_(A) = w`

D

`w_(B) = 0`

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The correct Answer is:
C, D
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