What is the reason If the total momentum of a system is changing? - ProProfs Discuss
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What is the reason If the total momentum of a system is changing?



A. Particles of the system must be exerting forces on each other
B. The system must be under the influence of gravity
C. The center of mass must have constant velocity
D. A net external force must be acting on the system
E. None of the above

This question is part of Physics C Practice
Asked by Dsj, Last updated: Feb 21, 2020

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dsj

Dsj

Answered Apr 18, 2018

A net external force must be acting on the system
 

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