Work and Power Practice

Front

What is the formula for calculating work?

Back

Work = Force x Distance

Front

What are the units for measuring work?

Back

Joules (J)

Front

If a force of 10 N is applied over a distance of 3 m, how much work is done?

Back

30 J

Front

What is power in terms of work and time?

Back

Power = Work / Time

Front

If 200 J of work is done in 4 seconds, what is the power?

Back

50 W

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy.

Front

If a person lifts a 20 kg object to a height of 2 m, how much work is done against gravity? (Use g = 9.8 m/s²)

Back

392 J

Front

What is the definition of power?

Back

Power is the rate at which work is done.

Front

If a machine does 500 J of work in 10 seconds, what is its power output?

Back

50 W

Front

What is the significance of the unit 'Watt'?

Back

1 Watt = 1 Joule/second