To accelerate your car at a constant acceleration, the car’s engine must

A sports car accelerates from rest to in . What is the average power delivered by the engine?

The quantity is

Some electric power companies use water to store energy. Water is pumped from a low reservoir to a high reservoir. To store the energy produced in hour by a electric power plant, how many cubic meters of water will have to be pumped from the lower to the upper reservoir?

Assume the upper reservoir is an average of above the lower. Water has a mass of for every .

Of the following, which is not a unit of power?

How many 75 W light bulbs connected to 120V can be used without blowing a 15A fuse?

A bicyclist coasts down a hill at a steady speed of . Assuming a total mass of (bike plus rider) what must be the cyclists’s power output to climb the same hill at the same speed?

A person accidentally leaves a car with the lights on. If each of the two headlights uses 40 W and each of the two tail lights 6 W, for a total of 92 W, how long will a fresh 12V battery last if it is rated at 75Ah? Assume the full 12V appears across each bulb.

How long will it take an motor to lift a piano to a window above?

You buy a 75W light bulb in Europe, where electricity is delivered at 240V. If you use the bulb in the United States at 120V (assume its resistance does not change) how bright will it be relative to 75W 120V bulbs?