Energy Review for Flashcard

Front

What is kinetic energy?

Back

Kinetic energy is the energy an object possesses due to its motion, calculated using the formula K = 1/2 mv², where m is mass and v is velocity.

Front

Where is maximum kinetic energy found on a roller coaster?

Back

At the bottom of a big hill.

Front

How do you calculate kinetic energy?

Back

Kinetic energy (K) is calculated using the formula K = 1/2 mv².

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, calculated using the formula PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

Which object has greater gravitational potential energy: a 3kg apple or a 50kg apple at the same height?

Back

The 50kg apple has greater gravitational potential energy because it has more mass.

Front

What energy conversion occurs in wind turbines?

Back

Wind turbines convert mechanical energy (from wind) into electrical energy.

Front

What is the definition of energy?

Back

Energy is the ability to do work.

Front

What is the formula for gravitational potential energy?

Back

PE = mgh, where PE is potential energy, m is mass, g is the acceleration due to gravity, and h is height.

Front

If a cat with a mass of 5 kg runs at a speed of 3 m/s, what is its kinetic energy?

Back

22.5 J.

Front

What type of energy is stored energy?

Back

Potential energy.