Work, Power, and Simple Machines

Front

What is the formula to calculate work?

Back

Work = Force x Distance

Front

What unit is work measured in?

Back

Joules (J)

Front

What is power?

Back

Power is the amount of work done in a certain amount of time.

Front

What unit is power measured in?

Back

Watts (W)

Front

What is a machine?

Back

A machine is any device that makes work easier.

Front

What is force?

Back

Force is a push or pull on an object.

Front

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

Back

Power = Work / Time

Front

If 30 Joules of work is done in 5 seconds, what is the power?

Back

Power = 30 J / 5 s = 6 W

Front

What is an example of work being done?

Back

Lifting a box is an example of work being done.

Front

What is not considered work?

Back

Holding a box still is not considered work.