Work and Power FLASHCARD

Front

One joule equals _____

Back

1 newton.meter

Front

As distance decreases, work ______

Back

decreases

Front

Calculate the power of a lift that moves 50 m using 750 N of force in 75 seconds.

Back

500 W

Front

Work is done when a weightlifter holds a barbell still above his head. True or False?

Back

False

Front

Who has greater power if Person A and Person B use the same amount of work, but Person A takes half as much time?

Back

Person A

Front

Define work in physics.

Back

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

Front

What is the formula for calculating power?

Back

Power = Work / Time

Front

What unit is power measured in?

Back

Watts (W)

Front

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

Back

20 W

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy.