Energy Academic

Front

What is the definition of energy in physics?

Back

Energy is the ability to do work or produce change, measured in joules (J).

Front

What is the principle of conservation of energy?

Back

The principle of conservation of energy states that energy cannot be created or destroyed, only transformed from one form to another.

Front

What is kinetic energy and how is it calculated?

Back

Kinetic energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is potential energy and how is it calculated?

Back

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

Front

What type of energy is associated with a compressed or stretched spring?

Back

Elastic energy is the potential energy stored in elastic materials as the result of their stretching or compressing.

Front

At what point in a roller coaster is potential energy the greatest?

Back

Potential energy is greatest at the highest point of the roller coaster.

Front

At what point in a roller coaster is kinetic energy the greatest?

Back

Kinetic energy is greatest at the lowest point of the roller coaster.

Front

What happens to potential and kinetic energy in a pendulum as it swings?

Back

As a pendulum swings from its highest to lowest position, potential energy decreases while kinetic energy increases.

Front

What is the unit of measurement for energy?

Back

The unit of measurement for energy is the joule (J).

Front

How does work relate to energy?

Back

Work is done when energy is transferred from one system to another, calculated as the product of force and displacement in the direction of the force.