Potential and Kinetic Energy

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object 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 stored energy that has the potential to do work. It is often associated with the position of an object in a gravitational field.

Front

What is the formula for calculating kinetic energy?

Back

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

Front

What is the formula for calculating potential energy?

Back

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

Front

How does height affect potential energy?

Back

Potential energy increases with height. The higher an object is, the more potential energy it has due to its position in a gravitational field.

Front

What happens to kinetic energy as an object speeds up?

Back

As an object speeds up, its kinetic energy increases because kinetic energy is proportional to the square of its velocity.

Front

What is the relationship between kinetic and potential energy in a roller coaster?

Back

In a roller coaster, potential energy is highest at the top of a hill and converts to kinetic energy as the coaster descends, increasing its speed.

Front

If a 0.3 kg marble is moving at 6 m/s, what is its kinetic energy?

Back

5.4 J (calculated using KE = 1/2 mv²).

Front

What type of energy is a bicyclist pedaling?

Back

Kinetic energy.

Front

What type of energy is represented by a book on a shelf?

Back

Potential energy.