Which has the most kinetic energy from its motion?
a) a 1,100-kg car traveling 60 km/h
b) a 300-kg motorcycle traveling 100 km/h
c) a 900-kg car traveling 80 km/h
d) a 2,000-kg truck traveling 50 km/h

1) what is the power in horsepower of a 100 watt light bulb? what is the power in kilowatts of a 200 horsepower engine? 2) if a cars engine is providing 3000 n of force to keep the car moving at 5 m/s, what is the engine’s effective power? 3) how many gallons of water will be pumped from a well 30 feet deep by a 1/2 hp engine in 1 minute? (1 gallon weighs 8.34 pounds)