A light and a heavy body have equal momenta. Which one has greater K.E?
Correct answer: A. The light body
- A. The light body
- B. The K.E. are equal
- C. The heavy body
- D. Data is incomplete
Explanation
If both their momenta are equal, this means the lighter body has more velocity, hence possesses greater kinetic energy.
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About Work and Energy
Work transfers energy when a force causes displacement, while kinetic energy, gravitational potential energy and power describe motion, position and the rate of energy transfer. The work-energy theorem links net work with change in kinetic energy, and efficiency accounts for energy losses rather than treating them as energy destruction.
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