Which one of the following is not accelerated?
(A) A rocket travelling from earth surface to sky
(B) A stone in free fall
(C) A tennis ball rebounding from the ground
(D) A car in which engine thrust is equal to the friction
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Answer:
D I the correct option. Since the engine thrust is equal to the frictional force so the net force on the vehicle is 0 so there is no acceleration of the car.
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