Flashcard: KE & PE

Front

What is Kinetic Energy (KE)?

Back

Kinetic Energy (KE) is the energy an object possesses due to its motion. It depends on the mass of the object and the square of its velocity.

Front

What is Potential Energy (PE)?

Back

Potential Energy (PE) is the stored energy in an object due to its position or state. It is often associated with the height of an object above the ground.

Front

What factors affect Gravitational Potential Energy?

Back

Gravitational Potential Energy is affected by height and weight (mass) of the object.

Front

What happens to energy when a ball is dropped?

Back

When a ball is dropped, its Potential Energy converts to Kinetic Energy as it falls, but some energy is lost to friction and air resistance.

Front

Can energy be created or destroyed?

Back

No, according to the Law of Conservation of Energy, energy cannot be created or destroyed, only transformed from one form to another.

Front

What is the formula for Kinetic Energy?

Back

The formula for Kinetic Energy is KE = 1/2 mv², where m is mass and v is velocity.

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 type of energy does a stationary object have?

Back

A stationary object has no Kinetic Energy (KE) and may have Potential Energy (PE) if it is elevated.

Front

What is an example of an object with both KE and PE?

Back

A roller coaster at the top of a hill has Potential Energy due to its height and Kinetic Energy as it moves down the hill.

Front

What happens to a bouncing ball's energy?

Back

A bouncing ball loses some energy to thermal energy due to friction, so it does not bounce back to its original height.