Mass, Speed, and Kinetic Energy

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 speed.

Front

How does mass affect Kinetic Energy?

Back

Kinetic Energy is directly proportional to mass. If the mass of an object doubles, its kinetic energy also doubles, assuming speed remains constant.

Front

What happens to Kinetic Energy when speed is doubled?

Back

When the speed of an object doubles, its kinetic energy quadruples, because kinetic energy is proportional to the square of the speed.

Front

What is the formula for calculating Kinetic Energy?

Back

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

Front

If an object has a mass of 2 kg and is moving at 3 m/s, what is its Kinetic Energy?

Back

KE = 1/2 * 2 kg * (3 m/s)² = 9 Joules.

Front

What is the relationship between speed and Kinetic Energy?

Back

Kinetic Energy increases with the square of the speed; if speed increases, kinetic energy increases significantly.

Front

Can Kinetic Energy be negative?

Back

No, Kinetic Energy cannot be negative; it is always a positive value or zero, as it depends on the square of the speed.

Front

What is the unit of Kinetic Energy?

Back

The unit of Kinetic Energy is Joules (J).

Front

How does a Kinetic Energy vs Speed graph look?

Back

A Kinetic Energy vs Speed graph is a parabolic curve, showing that kinetic energy increases with the square of speed.

Front

What happens to Kinetic Energy if an object's speed decreases?

Back

If an object's speed decreases, its kinetic energy also decreases.