Physical science ch.4 test review (Energy, Power, Work)

Front

The energy of movement is...?

Back

Kinetic

Front

In the equation PE = mgh, what does the 'g' mean?

Back

Acceleration due to gravity

Front

How do you calculate power?

Back

P = W/t

Front

How much power is required to raise a 200-kg crate a vertical distance of 2 m in a time of 4 s?

Back

1000 W

Front

Which requires more power – a person walking up stairs or a person running up stairs?

Back

Running

Front

What is the definition of potential energy?

Back

Energy stored in an object due to its position or state.

Front

What is the formula for kinetic energy?

Back

KE = 1/2 mv²

Front

What is the unit of power?

Back

Watt (W)

Front

What is the relationship between work and energy?

Back

Work done on an object results in a change in energy.

Front

What is the formula for work?

Back

W = Fd (Work = Force x distance)