Potential and Kinetic Review

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

What is potential energy?

Back

Potential energy is the stored energy of an object due to its position or state. It can be gravitational, elastic, or chemical.

Front

What is gravitational potential energy?

Back

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

Front

How does mass affect kinetic energy?

Back

Kinetic energy increases with mass. The formula for kinetic energy is KE = 1/2 mv², where m is mass and v is velocity.

Front

What happens to kinetic energy if the speed of an object doubles?

Back

If the speed of an object doubles, its kinetic energy increases by a factor of four, since KE is proportional to the square of the 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 an example of an object with potential energy?

Back

A rock at the edge of a cliff has gravitational potential energy due to its height.

Front

What is an example of an object with kinetic energy?

Back

A moving car has kinetic energy because it is in motion.

Front

What is the formula for calculating kinetic energy?

Back

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

Front

What type of energy does a compressed spring have?

Back

A compressed spring has elastic potential energy, which is stored energy due to its deformation.