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The kinetic energy acquired by a mass (m) in travelling distance (s) starting from rest under the action of a constant force is directly proportional to

1. 1/√m
2. 1/m
3. √m
4. m⁰

Correct answer: m⁰

Solution

The work-energy theorem states that the work done by the force is equal to the change in kinetic energy. Since the force is constant, work done is proportional to the distance (s), and kinetic energy is independent of the mass (m). Thus, it is proportional to m⁰, which equals 1.

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