Slope of work time graph is equal to____________________?
Correct answer: C. power
- A. displacement
- B. acceleration
- C. power
- D. energy
Explanation
Power is the rate at which work is done, P = W/t. Therefore, the slope of a work-time graph, ΔW/Δt, is power and is measured in watts. Students may choose d because work and energy have the same unit, but energy is the quantity represented by the vertical value, not the slope.
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About Power
Power is the rate at which work is done or energy is transferred, with average power calculated over a time interval and instantaneous power found from P = Fv when force and velocity are aligned. Work includes units, mechanical efficiency, and the distinction between power and total work or energy.
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