 Solution

ID: past-exam-of-the-physics-course-of-the-year-1-of-the-natural-sciences-course-of-the-university-of-cambridge/2011/paper-1/section-b/b7/iv/solution

Power is the rate of energy transfer:

P = \frac{d E _{transferred}}{d t} .

Net mechanical power equals the rate of kinetic-energy change in the work–energy description.

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