Forces & Energy Unit 3 Potential and Kinetic Energy

Front

What is potential energy?

Back

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

Front

What factors determine the amount of potential energy in an object?

Back

The amount of potential energy in an object is determined by its height above the ground and its mass.

Front

What is kinetic energy?

Back

Kinetic energy is the energy of an object in motion. It depends on the mass of the object and the speed at which it is moving.

Front

How is kinetic energy calculated?

Back

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

Front

What happens to potential energy when an object is lifted higher?

Back

When an object is lifted higher, its potential energy increases because it is further from the ground.

Front

What happens to kinetic energy when an object speeds up?

Back

When an object speeds up, its kinetic energy increases because kinetic energy is directly related to the square of its speed.

Front

What is the relationship between potential energy and kinetic energy?

Back

Potential energy can be converted into kinetic energy and vice versa. For example, when an object falls, its potential energy decreases while its kinetic energy increases.

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).

Front

How does mass affect potential energy?

Back

The greater the mass of an object, the greater its potential energy at a given height.

Front

What is gravitational potential energy?

Back

Gravitational potential energy is the potential energy an object has due to its height above the ground, calculated as PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.