Work done is equal to:
Correct answer: D. All of these
- A. Change in K.E
- B. Change in P.E
- C. Change in elastic P.E
- D. All of these
Explanation
Work can change various forms of energy depending on the context; it equals a change in kinetic energy (work-energy theorem) and can also go into or out of potential energy (gravitational, elastic). So all listed changes are possible outcomes of work.
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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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