Two particles A and B initially at rest, move towards each other under – InterviewSolution

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1.	Two particles A and B initially at rest, move towards each other under their mutual force of attraction. Atthe instant when the speed of A is v and the speed of Biis:-(A) 3v(B) v(C) 1.5v(D) zero
Answer» <p>At initial position both A and B are at rest, hence momentum is zero. It is given that no external force is acting on them .So, momentum remains zero. Since mass cannot be zero, therefore velocity is zero.option d</p>

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