a vehicle of mass 20 kg is moving with velocity of 4m/s .find magnitude of the force that is to be applied on the vehicle so that the vehicle have velocity of 1m/s after traveling distance of 20 m
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By work energy theorem
1/2mv^2 - 1/2mu^2= force×displacement
1/2×20×4×4 - 1/2 × 20×1×1=force×20
160-10=force×20
150/20=force
force=7.5N
1/2mv^2 - 1/2mu^2= force×displacement
1/2×20×4×4 - 1/2 × 20×1×1=force×20
160-10=force×20
150/20=force
force=7.5N
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