Kinetic and Potential Energy Review

Front

What is Kinetic Energy (KE)?

Back

Kinetic Energy 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 is the stored energy of an object due to its position or state. It is often associated with the height of an object above the ground.

Front

What is the formula for calculating Kinetic Energy?

Back

KE = 1/2 mv², where m is mass and v is velocity.

Front

What is the formula for calculating Potential Energy?

Back

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

Front

How does height affect Potential Energy?

Back

As the height of an object increases, its Potential Energy increases because it has the potential to do more work due to its elevated position.

Front

What happens to Kinetic Energy when an object speeds up?

Back

The Kinetic Energy increases as the speed of the object increases, since KE is proportional to the square of the velocity.

Front

What is the relationship between Kinetic Energy and Potential Energy in a closed system?

Back

In a closed system, the total energy (Kinetic + Potential) remains constant, meaning energy can transform from one form to another but cannot be created or destroyed.

Front

What is work in terms of energy?

Back

Work is done when a force is applied to an object and it moves. It is a transfer of energy.

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

What happens to Potential Energy as an object falls?

Back

As an object falls, its Potential Energy decreases while its Kinetic Energy increases, assuming no energy is lost to air resistance.