The SI unit of linear momentum is
- A. N s-1
- B. kg m s-1
- C. kg m s-2
- D. N m
Explanation
Momentum is mass times velocity, so its unit is kilogram metre per second. It is also equal to the newton second, since a newton is kg m s-2 and multiplying by a second gives kg m s-1. The unit kg m s-2 is the newton, a force, and the newton metre is the joule.
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