H2P-56
Power and velocity (P = Fv)
H2 Physics · JC 1 · Hard · Power and velocity (P = Fv)
A car of mass m is driven up a straight road inclined at 12° to the horizontal. At one instant, its acceleration up the slope is 0.80 m s⁻² and its speed is 18 m s⁻¹. Neglecting resistive forces, what is the power developed by the engine at that instant?
- 51m W
- 14.4m W
- 9.6m W
- 0.80m W
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