Understanding Energy Concepts

Front

What is the equation for kinetic energy?

Back

KE = 1/2 mv²

Front

How can you increase the gravitational potential energy of an object without changing its mass and gravity?

Back

Raise the object farther off the ground.

Front

Calculate the kinetic energy of a 70 kg runner moving at 5 m/s.

Back

875 J

Front

What is the formula for gravitational potential energy (GPE)?

Back

GPE = mgh (mass × gravity × height)

Front

What is energy?

Back

The ability to move or allow something to move.

Front

What is the unit of energy?

Back

Joule (J)

Front

What is the relationship between mass and kinetic energy?

Back

Kinetic energy is directly proportional to mass.

Front

What happens to kinetic energy if the velocity of an object doubles?

Back

Kinetic energy increases by a factor of four.

Front

What is the gravitational potential energy of an object at a height of 10 m with a mass of 5 kg?

Back

GPE = mgh = 5 kg × 9.8 m/s² × 10 m = 490 J

Front

What is the principle of conservation of energy?

Back

Energy cannot be created or destroyed, only transformed from one form to another.