When the resultant force acting on a system is zero, the total momentum of the system ______ (remains constant/ may vary). This is called ___________________ .
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Answer:
remains constan
Explanation:
If the external force acting on a system have zero resultant, then the total momentum remain . constant i.e conserved. Hence, the center of mass remains at rest or move with a constant velocity.
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Remain constant
According to conservation of momentum
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