Understanding Energy Concepts

Define work and how you can calculate it.

What is the mechanical advantage equation?

What is the efficiency equation?

What is the difference between kinetic energy and potential energy?

How can you calculate kinetic energy?

What are some different forms of potential energy?

How can you calculate gravitational potential energy?

What is the jogger’s kinetic energy from this forward motion?

• 270 J

• 180 J

• 90 J

Calculate the potential energy of the ball.

• 29.4 J

• 15 J

• 10 J

The gravitational potential energy of a cucumber-Earth system changes when which factor changes?

• the cucumber’s length

• the cucumber’s temperature

• the cucumber’s mass

• the cucumber’s speed