A man is sitting in a moving train , then Options: A . &nbsphis momentum mus not be zero B . &nbsphis kinetic energy is zero C . &nbsphis kinetic energy is not zero D . &nbsphis kinetic energy may be zero.

A man is sitting in a

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Question -

A man is sitting in a moving train , then

Options:

A . his momentum mus not be zero

B . his kinetic energy is zero

C . his kinetic energy is not zero

D . his kinetic energy may be zero.

Answer: Option D

The momentum and kinetic energy depend upon reference frame . In the frame of rain ,the man is in rest. So the momentum and kinetic energy of the man in the frame of train are zero.

But in the frame of ground, velocity of the man is non -zero , So in the frame of ground , momenum and kinetic energy are not zero .

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