A-LevelPhysicsWork, energy and power9702/12 · May/June 2017 · Q181 Mark
What is a correct derivation of the equation relating power, force and velocity?
Apower = work done / time taken and work done = force × displacement so power = force × displacement / time taken so power = force × velocity
Bpower = work done / time taken and work done = force × distance so power = force × distance / time taken so power = force × velocity
Cpower = work done / time taken and work done = force / displacement so power = force / displacement × time taken so power = force / velocity
Dpower = work done / time taken and work done = force / distance so power = force / distance × time taken so power = force / velocity
✓ Correct answer
A: power = work done / time taken and work done = force × displacement so power = force × displacement / time taken so power = force × velocity
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