Final Review 5 - Kinetic and Potential Energy

Front

What is Kinetic Energy?

Back

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

Front

What unit is Kinetic Energy measured in?

Back

Kinetic Energy is measured in Joules (J).

Front

How do you calculate Kinetic Energy?

Back

Kinetic Energy (KE) is calculated using the formula KE = 1/2 mv², where m is the mass of the object and v is its velocity.

Front

How do you calculate Potential Energy?

Back

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

Front

What is the Kinetic Energy of a 6 kg object moving at 3 m/s?

Back

The Kinetic Energy is 27 J, calculated using KE = 1/2 mv² = 1/2 * 6 kg * (3 m/s)².

Front

What is the Potential Energy of a 250 kg roller coaster at 50 m height?

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The Potential Energy is 125,000 J, calculated using PE = mgh = 250 kg * 9.81 m/s² * 50 m.

Front

What is the Potential Energy of a 20 kg box lifted 6 m?

Back

The Potential Energy is 1200 J, calculated using PE = mgh = 20 kg * 9.81 m/s² * 6 m.

Front

What is the Kinetic Energy of a 5 kg ball rolling at 10 m/s?

Back

The Kinetic Energy is 250 J, calculated using KE = 1/2 mv² = 1/2 * 5 kg * (10 m/s)².

Front

What is the relationship between mass and Kinetic Energy?

Back

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