If the velocity of a body becomes half, the kinetic energy of the body will become
Correct answer: D. Half
- A. One fourth
- B. Double
- C. Four times
- D. Half
Explanation
Kinetic energy is proportional to the square of velocity. When the velocity becomes half, the kinetic energy becomes one-fourth of its original value.
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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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