#2 Work and Power Review

Front

Which of the following is the best example of work being done?

Back

Lifting a box is the best example of work being done because it involves applying a force over a distance.

Front

A 50N block is lifted 10 m. How much work was done?

Back

Work done = Force x Distance = 50N x 10m = 500 J.

Front

What is the unit used to measure power?

Back

The unit used to measure power is the Watt (W).

Front

A force exerted over a distance to move an object is ______________________.

Back

Work.

Front

What is the unit for force?

Back

The unit for force is the Newton (N).

Front

Define work in physics.

Back

Work is defined as the product of the force applied to an object and the distance over which that force is applied.

Front

What is the formula for calculating work?

Back

Work = Force x Distance.

Front

What is power in the context of physics?

Back

Power is the rate at which work is done or energy is transferred.

Front

What is the formula for calculating power?

Back

Power = Work / Time.

Front

If 100 J of work is done in 5 seconds, what is the power?

Back

Power = Work / Time = 100 J / 5 s = 20 W.