Work and Power Check-in

Front

What is the definition of 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 = Force x Distance.

Front

What is power in the context of work?

Back

Power is the rate at which work is done or energy is transferred. It is calculated as Power = Work / Time.

Front

If you do the same amount of work in less time, what can be said about your power?

Back

You are more powerful.

Front

Does pushing against an immovable object count as doing work?

Back

No, work wasn't done because there is no movement.

Front

How do you calculate the distance moved if you know the work done and the force applied?

Back

Distance = Work / Force.

Front

What is the weight of an object?

Back

Weight is the force exerted by gravity on an object, calculated as Weight = Mass x Gravity (approximately 9.8 m/s² on Earth).

Front

What is the weight of a 25 kg box on Earth?

Back

245 N.

Front

What is the formula for calculating power?

Back

Power = Work / Time.

Front

If 68 Joules were necessary to move a 4 Newton crate, how far was the crate moved?

Back

17 m.

Front

What happens to power if the time taken to do work decreases while the work done remains the same?

Back

Power increases.