Work and Power Practice

Front

To solve for power, we use the formula: Power = Work divided by _________.

Back

Time

Front

It took 50 Joules to push a chair 5 meters across the floor. With what force was the chair pushed?

Back

10 N

Front

Units for work are:

Back

Joules

Front

Units of force are:

Back

Newtons

Front

How much work is done using a 500-watt microwave oven for 1 minute? (Hint: Use seconds as the unit for time.)

Back

30,000 J

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is the unit of power?

Back

Watts

Front

If a machine does 200 Joules of work in 4 seconds, what is its power output?

Back

50 Watts

Front

What is the relationship between work, power, and time?

Back

Power = Work / Time

Front

What is the definition of work in physics?

Back

Work is done when a force causes an object to move a distance.