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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 v . 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

`omega_Altomega_B`

B

`omega_A=omega_B`

C

`omega_A =omega`

D

`omega_Bltomega`

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