P.6A*: Calculating Work and Power

Front

How do we calculate work?

Back

W = F * d (Work = Force x Distance)

Front

What is the power of a kitchen blender if it can perform 3,750 Joules of work in 15 seconds?

Back

250 W (Power = Work / Time = 3750 J / 15 s)

Front

Which is the correct unit for work?

Back

Joules

Front

What is the rate at which work is done?

Back

Power

Front

What is the correct unit for power?

Back

Watt

Front

Define work in physics.

Back

Work is done when a force causes an object to move in the direction of the force.

Front

What is the formula for power?

Back

Power = Work / Time

Front

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

Back

50 W (Power = 500 J / 10 s)

Front

What is the relationship between work and energy?

Back

Work is a transfer of energy; when work is done, energy is transferred from one system to another.

Front

What is the SI unit of force?

Back

Newton (N)