Q .     Two particles `A` and `B` initially at rest move towards each other under a mutual force of attraction. At the instant when the velocity of `A` is `V` and that of `B` is `2 V` , the velocity of centre of mass of the system is :

EAMCET 2008
A

`zero`

B

`v`

C

` 2.5v`

D

`4v`

HINT

Since the objects are moving under mutual attraction. There is no external force acting on the system.

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