JEE Main Physics question

A car is moving with uniform velocity on a rough horizontal road. Therefore, according to Newton's first law of motion

(A)No force is being applied by its engine
(B)A force is surely being applied by its engineCorrect
(C)An acceleration is being produced in the car
(D)The kinetic energy of the car is increasing

Answer: (B)

Solution

By Newton's first law, a body moving with uniform (constant) velocity must have zero net force on it. Since the road is rough, friction opposes the car's

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Question ID VK-153398