Kinetic and Potential Energy

Front

What is Kinetic Energy?

Back

Kinetic Energy is the energy of an object in motion. It depends on the mass of the object and its velocity.

Front

What is Potential Energy?

Back

Potential Energy is stored energy based on an object's position or state. It has the potential to do work.

Front

What is the formula for Kinetic Energy?

Back

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

Front

What is the formula for Potential Energy?

Back

The formula for Potential Energy (PE) is PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

What happens to Kinetic Energy when speed increases?

Back

Kinetic Energy increases as speed increases, specifically, it increases with the square of the speed.

Front

What happens to Potential Energy when height increases?

Back

Potential Energy increases as height increases, since it is directly proportional to height.

Front

Is energy conserved in a closed system?

Back

Yes, energy is conserved in a closed system; it can change forms but cannot be created or destroyed.

Front

What is an example of Kinetic Energy?

Back

A moving car, a running athlete, or a flowing river are all examples of Kinetic Energy.

Front

What is an example of Potential Energy?

Back

A drawn bow, a rock at the top of a hill, or water behind a dam are all examples of Potential Energy.

Front

How does mass affect Kinetic Energy?

Back

Kinetic Energy increases with mass; if two objects are moving at the same speed, the heavier object has more Kinetic Energy.