1.

Two particles A and B which are initially atrest move towards each other under themutual force of attraction. At the instant whenthe speed of A is v and the speed of B is 2vThe speed of the centre of mass of thesystem is(A) v1(B) 1.5v(D) zero(C) 3v

Answer»

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



Discussion

No Comment Found

Related InterviewSolutions