Work and Power Review

Front

What is the formula for calculating power?

Back

Power (P) = Work (W) / Time (t)

Front

Define work in physics.

Back

Work is done when a force causes an object to move in the direction of the force. It is calculated as Work (W) = Force (F) x Distance (d).

Front

What units are used to measure work?

Back

Work is measured in joules (J).

Front

What is the relationship between work, force, and distance?

Back

Work is directly proportional to both the force applied and the distance over which the force is applied.

Front

How does increasing the force affect the work done?

Back

Increasing the force increases the work done, assuming the distance remains constant.

Front

How does increasing the distance affect the work done?

Back

Increasing the distance increases the work done, assuming the force remains constant.

Front

What is the unit of power?

Back

Power is measured in watts (W).

Front

If you do 100 joules of work in 5 seconds, what is your power output?

Back

Power = Work / Time = 100 J / 5 s = 20 W.

Front

What happens to power if you do the same work in half the time?

Back

If you do the same work in half the time, your power output doubles.

Front

What is the significance of power in a physical context?

Back

Power indicates how quickly work is done or energy is transferred.