kinetic and potential 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, calculated using the formula KE = 1/2 mv².

Front

What is potential energy?

Back

Potential energy is the stored energy in an object due to its position or state. It is often associated with the height of an object above the ground, calculated using the formula PE = mgh.

Front

How does height affect potential energy?

Back

The higher an object is positioned, the greater its potential energy. This is because potential energy is directly proportional to height.

Front

What is the formula for calculating gravitational potential energy?

Back

The formula for gravitational potential energy is PE = mgh, where m is mass, g is the acceleration due to gravity (approximately 9.81 m/s²), and h is height.

Front

What is the relationship between kinetic and potential energy?

Back

Kinetic and potential energy are forms of mechanical energy. In a closed system, energy can be transformed from potential to kinetic and vice versa, but the total energy remains constant.

Front

What happens to potential energy as an object falls?

Back

As an object falls, its potential energy decreases while its kinetic energy increases, assuming no energy is lost to air resistance.

Front

What is thermal energy?

Back

Thermal energy is the energy that comes from the temperature of matter. It is the total kinetic energy of the particles in an object.

Front

What is an example of potential energy in everyday life?

Back

A book on a shelf has potential energy due to its height above the ground. If it falls, that potential energy converts to kinetic energy.

Front

What is an example of kinetic energy in everyday life?

Back

A moving car has kinetic energy due to its mass and speed. The faster it goes, the more kinetic energy it has.

Front

How can potential energy be converted to kinetic energy?

Back

Potential energy can be converted to kinetic energy when an object is allowed to fall or move downward, such as a roller coaster descending from a height.