H2P-472
Conservation of energy
H2 Physics · JC 2 · Medium · Conservation of energy
A car of mass 1200 kg increases its speed uniformly from 10 m s to 16 m s in 4.0 s along a straight road. Assuming the driving force is constant and resistive forces are negligible, what is the average power developed by the engine during this time?
- 2.3 × 10 W
- 1.8 × 10 W
- 3.1 × 10 W
- 7.2 × 10 W
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