Work and Power Practice

Front

What is the formula to calculate work?

Back

Work (W) = Force (F) x Distance (d)

Front

If 68 Joules of work were done to move a crate with a force of 4 Newtons, how far was the crate moved?

Back

17 meters

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t)

Front

How much power is used when 500 Joules of work is done in 25 seconds?

Back

20 Watts

Front

If work is 225 Joules and power is 25 Watts, how long did it take to do the work?

Back

9 seconds

Front

What unit is used to measure work?

Back

Joules (J)

Front

What unit is used to measure power?

Back

Watts (W)

Front

How do you convert power from Watts to kilowatts?

Back

1 kilowatt = 1000 Watts, so divide the number of Watts by 1000.

Front

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

Back

Power is the rate at which work is done over time.

Front

If a force of 200 Newtons is applied over a distance of 50 meters, what is the work done?

Back

Work = 200 N x 50 m = 10,000 Joules.