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Two particles A and B (both initially at...

Two particles A and B (both initially at rest) start moving 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 2v, the speed of the centre of mass is

A

zero

B

v

C

`(3v)/2`

D

`-(3v)/2`

Text Solution

Verified by Experts

The correct Answer is:
A
As no external force is acting on the system, the centre of mass must be at rest i.e., `v_(em) = 0`
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Knowledge Check

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