Force, Power, and Work

Front

What is the formula for calculating power?

Back

P = W/t, where P is power, W is work, and t is time.

Front

What is the formula for calculating work?

Back

W = Fd, where W is work, F is force, and d is distance.

Front

What happens to power as time increases?

Back

Power decreases.

Front

What is the unit of power?

Back

The unit of power is the Watt (W).

Front

What is the unit of work?

Back

The unit of work is the Joule (J).

Front

What is the unit of force?

Back

The unit of force is the Newton (N).

Front

If a force of 10 N moves an object 5 meters, how much work is done?

Back

W = Fd = 10 N * 5 m = 50 J.

Front

If 100 J of work is done in 20 seconds, what is the power?

Back

P = W/t = 100 J / 20 s = 5 W.

Front

What is the relationship between work, power, and time?

Back

Power is the rate at which work is done; P = W/t.

Front

If a person uses 50 J of work to climb stairs in 10 seconds, what is their power output?

Back

P = W/t = 50 J / 10 s = 5 W.