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A system of N particles is free from any...

A system of `N` particles is free from any external forces.
(a) Which of the following is true for the magnitude of the total momentum of the system?

A

It must be zero

B

It could be non-zero, but it must be constant

C

It could be non-zero, and it might not be constant

D

It could be zero, even if the magnitude of the total momentum is not zero.

Text Solution

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The correct Answer is:
B
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