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JEE Main 2023 (12 Apr, Shift 1) · Work-Energy Theorem

Work-Energy Theorem question from JEE Main 2023 (12 Apr, Shift 1)

Q11JEE Main 2023 · 12 APR · SHIFT 1Medium

Work-Energy Theorem

Given below are two statements:

Statement I: A truck and a car moving with same kinetic energy are brought to rest by applying brakes 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

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Answer: (b)

  1. Statement I: Fs=KF s = K; same KK and same FF give the same ss. Correct.
  2. Statement II: the direction of velocity changes, so velocity changes and acceleration is not zero. Incorrect.
  3. So the answer is (b).
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