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NEET UG PHYSICS MCQ: SYSTEM OF PARTICLES

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Understanding +4 | -1

In free space, a shell moving with velocity

60\,m/s

along the positive x-axis. When it passes through origin, it explodes into two pieces of mass ratio 1: 2. After the explosion, the velocity of the centre of mass is:-

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Correct option: B

60\,m/s

Option B is correct. The velocity of the center of mass remains constant unless acted upon by an external force. Since the shell explodes due to internal forces, the velocity of the center of mass remains the same, which is 60 m/s.

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