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Two particles A and B intiallly at rest,...

Two particles A and B intiallly at rest, move towards each other under a mutual force of attraction. AT the instant when the speed of A is v and the speed of B is 2 v, the speed of the centre of mass of the system is

A

zero

B

v

C

1.5v

D

3v

Text Solution

Verified by Experts

The correct Answer is:
A

`P_(i)=0`
`therefore` `P_(f) = 0` or center of mass should be at rest at all instants.
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