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Q.

Two particles A and B, initially at rest, moves 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 centre of mass is

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a

zero

b

2v

c

v

d

1.5 v

answer is D.

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Detailed Solution

When two particles move towards each other under mutual attraction the center of mass will be at rest.

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