Work and Power

Front

What does one newton exerted over a distance of one meter equal?

Back

One joule

Front

You move an 8-newton weight five meters in 4 seconds. How much power have you generated?

Back

10 watts

Front

The unit of work is the ...

Back

joule

Front

Work divided by time equals...

Back

power

Front

A weightlifter lifts two 300 newton weights 1.5 meters off the ground. How much work has he done?

Back

900 J

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What is the formula for calculating power?

Back

Power = Work / Time

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy.

Front

What is the SI unit of power?

Back

Watt (W)

Front

If 10 joules of work is done in 2 seconds, what is the power?

Back

5 watts