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

What happens to Kinetic Energy when mass is doubled?

Back

Kinetic Energy doubles if speed remains constant, as it is directly proportional to mass.

Front

What two factors determine the amount of Kinetic Energy an object has?

Back

Mass and speed are the two factors that determine the amount of Kinetic Energy an object has.

Front

Can a Kinetic Energy vs Mass graph show a curved line?

Back

No, a Kinetic Energy vs Mass graph is a straight line when speed is constant.

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's speed doubles, how does its Kinetic Energy change?

Back

If speed doubles, Kinetic Energy increases by a factor of four, since KE is proportional to the square of speed.

Front

What is the relationship between speed and Kinetic Energy?

Back

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

Front

How does changing speed from 100 km/h to 50 km/h affect Kinetic Energy?

Back

Kinetic Energy decreases from 400 kJ to 100 kJ when speed is reduced from 100 km/h to 50 km/h.

Front

What is the unit of Kinetic Energy?

Back

The unit of Kinetic Energy is Joules (J).

Front

If an object with a mass of 2000 kg is moving at 80 m/s, what is its Kinetic Energy?

Back

The Kinetic Energy is 1,000,000 J.