A smooth sphere A is moving on a frictionless horizontal plane with an – McqOptions

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1.	A smooth sphere A is moving on a frictionless horizontal plane with angular speed and the centre of mass velocity u. It collides elastically and head on with an identical sphere B at rest. Neglect friction everywhere. After the collision, their angular speeds are _(A) and _(B) respectively. Then?
A.	<sub>A</sub> is lesser than <sub>B</sub>
B.	<sub>A</sub>= <sub>B</sub>
C.	<sub>A</sub>=
D.	<sub>B</sub>=
Answer» D. <sub>B</sub>=

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