Two particles which are initially at rest, move towards each other und – McqOptions

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1.	Two particles which are initially at rest, move towards each other under the action of their internal attraction. If their speeds are v and 2v at any instant, then the speed of centre of mass of the system will be:
A.	2v
B.	zero
C.	1.5
D.	v
Answer» C. 1.5

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