Energy Tranformations

Front

What is kinetic energy and where is it maximum on a roller coaster?

Back

Kinetic energy is the energy of motion. It is maximum at the bottom of a big hill on a roller coaster.

Front

How do the gravitational potential energies of two airplanes flying at different heights compare?

Back

Two airplanes flying at the same speed but at different heights have the same kinetic energy but different gravitational potential energies.

Front

What type of energy conversion occurs when a lion eats a zebra and runs?

Back

The lion's body converts chemical energy from the zebra into mechanical energy for running.

Front

What type of energy is stored in a battery?

Back

Batteries store chemical energy.

Front

Can energy be created or destroyed?

Back

No, energy cannot be created or destroyed; it can only be transformed from one form to another.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the energy an object possesses due to its position in a gravitational field, typically related to its height.

Front

What is the formula for calculating kinetic energy?

Back

Kinetic energy (KE) is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its gravitational potential energy decreases while its kinetic energy increases.

Front

What is the relationship between kinetic energy and speed?

Back

Kinetic energy is directly proportional to the square of the speed; as speed increases, kinetic energy increases exponentially.

Front

What is mechanical energy?

Back

Mechanical energy is the sum of kinetic and potential energy in an object.