Work and Power

Front

What is the formula for calculating work?

Back

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

Front

What unit is work measured in?

Back

Joules (J)

Front

What is power in relation to work?

Back

Power is the rate at which work is done, calculated as Power = Work / Time.

Front

What is the unit of power?

Back

Watts (W)

Front

How do simple machines help in performing work?

Back

Simple machines make work easier by increasing the distance over which work is done or by changing the direction of the force.

Tags

NGSS.MS-ETS1-1

Front

True or False: Work is done when a force is applied but there is no movement. Why?

Back

False. Work is only done when a force causes movement in the direction of the force.

Front

If a force of 50 N is applied to move an object 2 meters, how much work is done?

Back

Work = 50 N x 2 m = 100 J.

Front

What factors affect the amount of work done on an object?

Back

The amount of work done depends on the magnitude of the force applied and the distance over which the force is applied.

Front

What is the relationship between work and energy?

Back

Work done on an object transfers energy to that object.

Front

If you lift an object to a height of 2 meters, what type of energy does it gain?

Back

Potential energy.

Tags

NGSS.MS-PS3-2