Flashcard: KE & PE

Front

What is Kinetic Energy (KE)?

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 (PE)?

Back

Potential Energy is the stored energy in an object due to its position or state. For gravitational potential energy, it is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

At which point in a swing is Kinetic Energy greatest?

Back

Kinetic Energy is greatest at the lowest point of the swing, where the speed is highest.

Front

Why does a textbook on a shelf have Potential Energy?

Back

A textbook on a shelf has Potential Energy because work was done to lift it to that height against the force of gravity.

Front

What factors affect Gravitational Potential Energy?

Back

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

Front

At which point is Potential Energy greatest in a swing?

Back

Potential Energy is greatest at the highest points of the swing, where the object is momentarily at rest.

Front

Can a ball bounce back to its original height after being dropped?

Back

No, a ball cannot bounce back to its original height because some energy is lost to friction and converted to thermal energy.

Front

What is the Law of Conservation of Energy?

Back

The Law of Conservation of Energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

How does height affect Potential Energy?

Back

As height increases, Potential Energy increases because it is directly proportional to height in the formula PE = mgh.

Front

What is the relationship between mass and Kinetic Energy?

Back

Kinetic Energy is directly proportional to mass; if mass increases, Kinetic Energy increases if velocity remains constant.