Physicsmedium · Past Paper
A car is moving with a constant speed of 20 m/s. The engine exerts a force of 500 N. The power of the engine is:
A10 kW
B25 kW
C100 kW
D2.5 kW
✓ Correct Answer: A — 10 kW
Power = Force * Velocity = 500 N * 20 m/s = 10,000 W = 10 kW.
Share this question
More from Physics
- What is the speed of sound in steel?
- Which subjective property of sound is related to the objective property 'Intensity'?
- What happens to the kinetic energy of an object if its velocity is doubled?
- When the temperature of a metallic conductor increases, its resistance usually:
- A vibrating body with a high frequency produces a sound that is: