$A$ system of $N$ particles is free from any external forces. Which of the following is true for the magnitude of the total momentum of the system?
$A$ system of $N$ particles is free from any external forces. 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
The answer depends on the nature of the internal forces in the system
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- [JEE MAIN 2022]
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- [AIPMT 2009]