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Question 4

Given below are two statements:
Statement I : A truck and a car moving with same kinetic energy are brought to rest by applying breaks which provide equal retarding forces. Both come to rest in equal distance.
Statement II : A car moving towards east takes a turn and moves towards north, the speed remains unchanged. The acceleration of the car is zero.
In the light of given statements, choose the most appropriate answer from the options given below

Statement I: By work-energy theorem, $$Fd = KE$$. Same KE and same retarding force F → same distance d. True.

Statement II: Direction changes from east to north → velocity direction changed → acceleration is NOT zero (centripetal acceleration exists). False.

Statement I is correct but Statement II is incorrect.

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