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Question

A body of mass 2 kg is slipping on a frictionless horizontal table with a velocity of 4 m/s. The necessary force in newton to keep the body moving with the same velocity will be:

A
zero
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B
8
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C
0.50
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D
200
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Solution

The correct option is D zero
A body is slipping on a frictionless horizontal table, therefore no friction applied.
Thus energy doen't loses and so the body is in uniform motion without any application of external force as per Newton's first law of motion.
i.e.F=μN=0

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