1
KCET 2019
MCQ (Single Correct Answer)
+1
-0

Two particles which are initially at rest move towards each other under the action of their mutual attraction. If their speeds are $$v$$ and $$2 v$$ at any instant, then the speed of centre of mass of the system is

A
$$2v$$
B
zero
C
$$1.5v$$
D
$$v$$
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