Work and Power (2024 update)

Front

Force is considered _____ or _______

Back

push or pull

Front

If it takes 100 J of work to move an object in 10 seconds, what is the power?

Back

10 W

Front

You push against the back of your friend's car that is stuck. You continue to push and become very tired, but the car does not move. Did you do work?

Back

No, work wasn't done

Front

If 68 W of power is produced in 18 seconds, how much work is done?

Back

1,224 J

Front

How much time is needed to produce 720 Joules of work if 90 watts of power is used?

Back

8 s

Front

Definition of Work in physics

Back

Work is done when a force causes an object to move in the direction of the force.

Front

Formula for calculating Power

Back

Power = Work / Time

Front

Unit of Power

Back

Watt (W), which is equivalent to Joules per second (J/s).

Front

What is the relationship between Work, Power, and Time?

Back

Power is the rate at which work is done over time.

Front

Example of calculating Work done

Back

If a force of 10 N moves an object 5 m, Work = Force x Distance = 10 N x 5 m = 50 J.