Unit 4: Energy Review

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically measured relative to a reference point.

Front

At what point does a thrown ball have the most gravitational potential energy?

Back

At the highest point of its trajectory.

Front

Where does kinetic energy equal potential energy for a falling object?

Back

Halfway down its fall.

Front

What is the SI unit for work?

Back

Joule (J), which is equal to one Newton-meter.

Front

What is the formula for calculating work?

Back

Work = Distance x Force.

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object has due to its motion, calculated as KE = 1/2 mv², where m is mass and v is velocity.

Front

Give an example of an object with kinetic energy.

Back

A tennis ball rolling across the court.

Front

What happens to gravitational potential energy as an object falls?

Back

As an object falls, its gravitational potential energy decreases while its kinetic energy increases.

Front

What is the relationship between work and energy?

Back

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

Front

What is the formula for gravitational potential energy?

Back

Gravitational Potential Energy (PE) = mass (m) x gravitational acceleration (g) x height (h).