Physics
The force needed to stop a moving body in a definite time depends on:
- mass of the body
- velocity of the body
- both (a) and (b)
- none of these
Laws of Motion
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Answer
both (a) and (b)
Reason — The force needed to stop a moving body in a definite time depends on the product of mass and velocity, which is called linear momentum of the moving body. Thus, p = mv.
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Related Questions
Newton's first law of motion defines force :
- quantitatively
- qualitatively
- both (a) and (b)
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The linear momentum of a body of mass m moving with velocity v is —
- v/m
- m/v
- mv
- 1/mv
The unit of linear momentum is —
- N s
- kg m s-2
- N s-1
- kg2 m s-1
Linear momentum is a :
- scalar quantity
- vector quantity
- directionless quantity
- none of these