1. Energy – chapter 9

2. Energy is the ability to do work.

3. Work occurs when a force causes an object to move in the direction of the force.

4. A force
Is a push…. Or a pull

5. Kinetic energy is the energy of motion
Kinetic energy is the energy of motion. Anything that moves has kinetic energy.

6. An object has greater kinetic energy when
1) It moves faster
2) Or it has greater mass

7. Potential energy is the energy of position or shape.

8. To increase gravitational potential energy
Increase height
Increase mass

9. Which has more gravitational potential energy?

10. The guy to the left, because
Even though he has the same weight (mass x gravity is in newtons), he has a longer distance to fall.

11. Which has more gravitational potential energy?

12. The girl to the right, because even though they are at the same height, she has more weight.

13. Mechanical energy is the total of all kinetic and potential energy.

14. Kinetic energy and potential energy trade off
Kinetic energy and potential energy trade off. As one is reduced the other increases….

15. Roller coaster fun…