REVIEW Kinetic & Potential Energy Calculations

Front

What is Kinetic Energy?

Back

Kinetic Energy (KE) is the energy an object possesses due to its motion. It is calculated using the formula KE = 1/2 mv², where m is mass and v is velocity.

Front

What is Potential Energy?

Back

Potential Energy (PE) is the energy stored in an object due to its position or height. It is calculated using the formula PE = mgh, where m is mass, g is the acceleration due to gravity, and h is height.

Front

Calculate the Kinetic Energy of a 5 kg cat running at 3 m/s.

Back

22.5 J (KE = 1/2 * 5 kg * (3 m/s)² = 22.5 J)

Front

What type of energy is associated with an object's position?

Back

Potential Energy.

Front

Calculate the Potential Energy of a 2500 kg car on a hill 100 m high.

Back

2,450,000 J (PE = mgh = 2500 kg * 9.8 m/s² * 100 m = 2,450,000 J)

Front

Energy due to motion is ____________ energy.

Back

Kinetic energy.

Front

What is the formula for calculating Kinetic Energy?

Back

KE = 1/2 mv².

Front

What is the formula for calculating Potential Energy?

Back

PE = mgh.

Front

If an object has a mass of 150 kg and is moving at 15 m/s, what is its Kinetic Energy?

Back

16,875 J (KE = 1/2 * 150 kg * (15 m/s)² = 16,875 J)

Front

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

Back

Joule (J).