What happens to the kinetic energy of a moving object if the net work done is positive?
Correct answer: A. The kinetic energy increases
- A. The kinetic energy increases
- B. The kinetic energy remains the same
- C. The kinetic energy decreases
- D. The kinetic energy is zero
Explanation
Work dne on the body equals the change in its kinetic energy. If work done is positive KE inc. If work done is negative KE dec.
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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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