Describing Energy

Front

What is kinetic energy?

Back

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

Front

Can a stationary object have kinetic energy?

Back

No, a stationary object has no kinetic energy because its velocity is zero.

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. It can be gravitational, elastic, or chemical.

Front

What are the two main categories of energy?

Back

The two main categories of energy are kinetic energy and potential energy.

Front

At what position does a pendulum have the greatest gravitational potential energy?

Back

A pendulum has the greatest gravitational potential energy at its highest point.

Front

Where is potential energy greatest in a roller coaster?

Back

Potential energy is greatest at the highest point of the roller coaster.

Front

What happens to potential energy as an object falls?

Back

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

Front

What is the formula for gravitational potential energy?

Back

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

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy increases with the square of the speed; if speed doubles, kinetic energy increases by a factor of four.

Front

What is an example of potential energy?

Back

An example of potential energy is a rock held at the top of a hill.