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
Show answer and solution
Answer: (b)
- Statement I: ; same and same give the same . Correct.
- Statement II: the direction of velocity changes, so velocity changes and acceleration is not zero. Incorrect.
- So the answer is (b).