Physics Work, Energy, Power and Collision Potential Energy and Mechanical Energy Conservation MCQ (Single Correct)

A particle of mass m is moving with speed u. It is stopped by a force F in distance x. If the stopping force is 4F then:

A
work done by stopping force in second case will be same as that in first case.
B
work done by stopping force in second case will be 2 times of that in first case.
C
work done by stopping force in second case will be 1/2 of that in first case.
D
work done by stopping force in second case will be 1/4 of that in first case.

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Text Solution

Verified by Experts
The correct answer is:
A

As KE is same in both the cases, work done will be same.

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