Work and Power Problems

Front

What is Work in physics?

Back

Work is defined as the product of force and the distance over which that force is applied. It is measured in joules (J).

Front

What is the formula for calculating Work?

Back

Work = Force x Distance

Front

What is Power in physics?

Back

Power is the rate at which work is done or energy is transferred. It is measured in watts (W).

Front

What is the formula for calculating Power?

Back

Power = Work / Time

Front

If 90 joules of work is done in 30 seconds, what is the power generated?

Back

3 watts

Front

How much work is done when a force of 60 N is applied over a distance of 2 m?

Back

120 J

Front

What is the relationship between Work, Force, and Distance?

Back

Work is directly proportional to both the force applied and the distance moved in the direction of the force.

Front

How much work is done when a 45 N force moves an object 20 m?

Back

900 J

Front

If a weightlifter lifts two 300 N weights 1.5 m, how much work is done?

Back

900 J

Front

What units are used to measure Work?

Back

Work is measured in joules (J).