Potential and Kinetic Energy

Front

What is kinetic energy?

Back

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

Front

What is potential energy?

Back

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

Front

How is kinetic energy calculated?

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 kinetic energy if the speed of an object is halved?

Back

If the speed of an object is halved, its kinetic energy becomes 1/4 of the original value.

Front

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

Back

If the speed of an object is tripled, its kinetic energy becomes 9 times the original value.

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to the mass of the object; if mass increases, kinetic energy increases.

Front

What is gravitational potential energy?

Back

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

Front

Give an example of kinetic energy in everyday life.

Back

A moving car, a running athlete, or a flowing river are all examples of kinetic energy.

Front

Give an example of potential energy in everyday life.

Back

A book on a shelf, a drawn bow, or water stored in a dam are all examples of potential energy.

Front

What is the unit of energy in the International System of Units (SI)?

Back

The unit of energy in the SI system is the Joule (J).