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Two particle A and B start moving due to...

Two particle A and B start moving due to their mutual interaction only. If at any time `t`, `vec(a)_(A)` and `vec(a)_(B)` are their respective accelerations, `vec(v)_(A)` and `vec(v)_(B)` are their respective velocities, and upto that time `W_(A)` and `W_(B)` are the work done on A and B respectively by the mutual force, `m_(A)` and `m_(B)` are their masses respectively, then which of the following is always correct.

A

`vecv_A + vecv_B = 0`

B

` m_Avecv_A + m_Bvecv_B = 0`

C

`W_A + W_B = 0`

D

`veca_A + veca_B = 0`

Text Solution

Verified by Experts

The correct Answer is:
B
As initial momentum is zero as they start from rest, so final momentum is also zero as external force is zero.
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