Mechanical Energy

Front

What is Mechanical Energy?

Back

Mechanical Energy is the sum of potential energy and kinetic energy in an object, representing the energy associated with its motion and position.

Front

What is 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 Kinetic Energy?

Back

Kinetic Energy is the energy of an object in motion, calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

How is Potential Energy calculated?

Back

Potential Energy (PE) is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity (9.81 m/s²), and h is height.

Front

What happens to Potential Energy as height increases?

Back

Potential Energy increases with an increase in height.

Front

What is the relationship between speed and Kinetic Energy?

Back

Kinetic Energy increases with the square of the speed; if speed doubles, Kinetic Energy quadruples.

Front

Give an example of Potential Energy.

Back

A stretched rubber band is an example of Potential Energy.

Front

What is the formula for Kinetic Energy?

Back

The formula for Kinetic Energy is KE = 1/2 mv².

Front

If a car has a mass of 2,500 kg and is 100 meters above sea level, what is its Potential Energy?

Back

The Potential Energy is 2,450,000 J.

Front

What is the unit of energy?

Back

The unit of energy is the Joule (J).