If a car is moving on a straight road with constant speed . Then Options: A . &nbspwork is done against force of friction B . &nbspnet work done on car is zero C . &nbspnet work done may be zero D . &nbspboth (A) and (B) are correct

If a car is moving on

Question

If a car is moving on a straight road with constant speed . Then

Options:

A . work is done against force of friction

B . net work done on car is zero

C . net work done may be zero

D . both (A) and (B) are correct

Answer: Option D

According to work energy theorem, net work done is given by change in kinetic energy ./ Since no change takes place in kinetic energy . Hence net work done should be zero

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