Work and Power

Front

What is work in physics?

Back

Work measures how much effort is applied over a certain distance.

Front

What is the unit of work?

Back

The unit of work is the joule (J).

Front

How is work calculated?

Back

Work is calculated using the formula: Work = Force x Distance.

Front

What does one joule represent?

Back

One joule is the work done when a force of one newton moves an object one meter.

Front

If a force of 70 N is applied over a distance of 1.1 m, how much work is done?

Back

77 J.

Front

What is power in relation to work?

Back

Power is the rate at which work is done.

Front

What is the unit of power?

Back

The unit of power is the watt (W).

Front

How is power calculated?

Back

Power is calculated using the formula: Power = Work / Time.

Front

If 900 J of work is done in 3 seconds, what is the power?

Back

300 W.

Front

What do simple machines do?

Back

Simple machines make work easier by increasing the distance over which work is done.