Potential and Kinetic Energy

Front

What is the definition of potential energy?

Back

Potential energy is the energy stored in an object due to its position or configuration, often related to its height above the ground.

Front

What is the definition of kinetic energy?

Back

Kinetic energy is the energy of an object in motion, which depends on its mass and velocity.

Front

How is potential energy calculated for an object at height?

Back

Potential energy (PE) can be calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

How is kinetic energy calculated?

Back

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

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 the relationship between potential and kinetic energy in a closed system?

Back

In a closed system, the total mechanical energy (potential + kinetic) remains constant, according to the law of conservation of energy.

Front

What is an example of an object with high potential energy?

Back

A book placed on a high shelf has high potential energy due to its elevated position.

Front

What is an example of an object with high kinetic energy?

Back

A moving car has high kinetic energy due to its mass and speed.

Front

True or False: An object at rest has kinetic energy.

Back

False. An object at rest has no kinetic energy.

Front

True or False: The higher an object is, the more potential energy it has.

Back

True. The potential energy increases with height.