Class 11

8. Work, Energy And Power & Collision question bank (Physics)

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Q1.

One man takes 1 minute to raise a box to a height of 1 m and another man takes \( \frac{1}{2} \) minute to do so. The energy of the two is

(A)
Different
(B)
Same
(C)
Energy of the first is more
(D)
Energy of the second is more
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Q2.

Identify the false statement from the following

(A)
Work-energy theorem is not independent of Newton’s second law
(B)
Work-energy theorem holds in all inertial frames
(C)
Work done by friction over a closed path is zero
(D)
No potential energy can be associated with friction
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