Kinetic and Potential 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

What is Potential Energy?

Back

Potential Energy is the energy stored in an object due to its position or state. It is often associated with gravitational potential energy, calculated as PE = mgh, where m is mass, g is acceleration due to gravity, and h is height.

Front

How does mass affect Kinetic Energy?

Back

Kinetic Energy is directly proportional to mass. If the mass of an object increases, its kinetic energy increases if the velocity remains constant.

Front

How does velocity affect Kinetic Energy?

Back

Kinetic Energy is proportional to the square of the velocity. If the velocity of an object doubles, its kinetic energy increases by a factor of four.

Front

What happens to Potential Energy when an object is lifted higher?

Back

The Potential Energy of an object increases as it is lifted higher because it has more energy stored due to its elevated position.

Front

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

Back

In a closed system, the total energy (Kinetic + Potential) remains constant. Energy can transform from one form to another, but the total amount does not change.

Front

What is the formula for calculating Kinetic Energy?

Back

The formula for calculating Kinetic Energy is KE = 1/2 mv².

Front

What is the formula for calculating Potential Energy?

Back

The formula for calculating Potential Energy is PE = mgh.

Front

If a 5 kg ball is rolling at 10 m/s, what is its Kinetic Energy?

Back

The Kinetic Energy is 250 J.

Front

True or False: Moving a book to a lower shelf decreases its Potential Energy.

Back

True.