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Application of Second law of Motion

An object of ...

Question

An object of mass m kg is travelling on a smooth straight road with a velocity of 54Kmph. It is stopped due to the application of brakes, which produces a uniform retardation, by exerting a constant resisting force F newton. The object covers a displacement of 56.25m. The numerical relation, between the force F and mass m will be:

A

F= 4m

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B

F = ½m

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C

F= 2m

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D

F = 3m

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Solution

The correct option is C
F= 2m

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