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10 Two particles of masses m(1) and m(2)...

10 Two particles of masses `m_(1)` and `m_(2)` initially at rest start moving towards each other under their mutual force of attraction. The speed of the centre of mass at any time t, when they are at a distance r apart, is

A

zero

B

`(G(m_(1)m_(2)))/(r^(2)).(1)/(m_(1))t`

C

`(G.(m_(1)m_(2)))/(r^(2)).(1)/(m_(2))t`

D

`(G(m_(1)m_(2))/(t^(2)).(1)/(m_(1)+m_(2)))t`

Text Solution

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The correct Answer is:
A
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