Energy

Front

What is potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration. It is the energy that has the potential to be converted into kinetic energy.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object due to its motion. It depends on the mass of the object and the square of its velocity.

Front

At which point in a pendulum's swing is potential energy greatest?

Back

Potential energy is greatest at the highest points of the swing (points 1 and 5) where the pendulum is momentarily at rest.

Front

At which point in a pendulum's swing is kinetic energy greatest?

Back

Kinetic energy is greatest at the lowest point of the swing (point X) where the pendulum is moving the fastest.

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

What is an example of energy transformation from electrical to mechanical?

Back

An electric motor transforms electrical energy into mechanical energy.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy held by an object because of its height above the ground, calculated as PE = mgh (mass x gravity x height).

Front

What factors affect kinetic energy?

Back

Kinetic energy is affected by the mass of the object and its velocity, expressed by the formula KE = 1/2 mv².

Front

What is the relationship between potential energy and height?

Back

Potential energy increases with height; the higher an object is, the more potential energy it has due to gravity.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, conserving the total mechanical energy.