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JEE PHYSICS MCQ: SYSTEM OF PARTICLES

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A nonzero external force acts on a system of particles. The velocity and the acceleration of the centre of mass are found to be v0v_0 and a0a_0 at an instant tt. It is possible that
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Correct option: B
v0=0,a0≠0v_0=0, a_0 \neq 0
Option B (v0=0,a0≠0v_0=0, a_0 \neq 0) is correct because a non-zero external force implies a non-zero acceleration of the center of mass, while the velocity can be instantaneously zero.

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