Calculating Kinetic Energy II

Front

What is Kinetic Energy?

Back

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

Front

What is the formula for calculating Kinetic Energy?

Back

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

Front

How does mass affect Kinetic Energy?

Back

Kinetic Energy is directly proportional to mass; as mass increases, Kinetic Energy increases if velocity remains constant.

Front

How does velocity affect Kinetic Energy?

Back

Kinetic Energy is proportional to the square of velocity; if velocity doubles, Kinetic Energy increases by a factor of four.

Front

What is the unit of Kinetic Energy?

Back

The unit of Kinetic Energy is the Joule (J).

Front

If an object has a mass of 10 kg and is moving at 5 m/s, what is its Kinetic Energy?

Back

KE = 1/2 * 10 kg * (5 m/s)² = 125 J.

Front

What is the Kinetic Energy of a 75 kg object moving at 30 m/s?

Back

KE = 1/2 * 75 kg * (30 m/s)² = 33,750 J.

Front

How do you find the mass of an object if you know its Kinetic Energy and speed?

Back

Rearrange the Kinetic Energy formula: m = 2KE/v².

Front

What is the maximum Kinetic Energy of a polar bear with a mass of 500 kg?

Back

If the maximum Kinetic Energy is 60,500 J, the top speed can be calculated using KE = 1/2 mv².

Front

What is the Kinetic Energy of a 26 kg eagle flying at 19 m/s?

Back

KE = 1/2 * 26 kg * (19 m/s)² = 4,693 J.