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Katen [24]
3 years ago
12

Can objects in a system have momentum while the momentum of the system is zero? explain your answer.

Physics
1 answer:
alexgriva [62]3 years ago
3 0
Yes.  Momentum is a vector, so several non-zero momenta can add up to zero.  Consider for a simple example a mass of 10kg moving to the right at 5m/s, and another mass of 10kg moving to the left at 5m/s.  These momenta each have a magnitude equal to 50 kg m/s but have opposite sign and so the total system's momentum is zero.
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Answer:

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Velocity is the change in displacement over change in time, this makes it a rate of change. It can be positive or negative because it is a vector quantity. It uses the units m/s because that is a displacement unit over a time unit.

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