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Two paricle A and B initially at rest, m...

Two paricle A and B initially at rest, move towards each other under mutual force of attraction. At the instant when the speed of A is V and the speed of B is 2V, the speed of the centre of mass of the system is

A

velocity remains constant

B

zero

C

2v

D

3v/2

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The correct Answer is:
B
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