Question text
12 A car of mass 1400 kg is travelling on a straight, horizontal road at a constant speed of 25 m s–1. The useful output power from the car’s engine is 30 kW. The car then travels up a slope at 2.0° to the horizontal, maintaining the same constant speed. 25 m s–1 1400 kg 25 m s–1 2.0° What is the useful output power of the car’s engine when travelling up the slope? A 12 kW B 31 kW C 42 kW D 65 kW
12 A car of mass 1400 kg is travelling on a straight, horizontal road at a constant speed of 25 m s–1.
The useful output power from the car’s engine is 30 kW.
The car then travels up a slope at 2.0° to the horizontal, maintaining the same constant speed.
25 m s–1
1400 kg
25 m s–1
2.0°
What is the useful output power of the car’s engine when travelling up the slope?
A 12 kW B 31 kW C 42 kW D 65 kW
Select your answer: