1. Potential & Kinetic Energy

2. Energy The ability to do work The ability to cause matter to move The ability to cause matter to change Measured in joules & calories

3. Types of Energy Radiant (light, electromagnetic) Nuclear (atomic) Mechanical Heat (thermal) Sound Chemical You will see other types or forms of energy in books and on the Internet

4. Energy can be divided into two general categories: Potential Kinetic

5. Potential Energy Stored energy Energy of position The amount of usable energy in a body at rest Sometimes called GRAVITATIONAL POTENTIAL ENERGY

6. Potential Energy Can be calculated mathematically PE = (weight) (height)

7. Potential energy can be increased by: Increasing height Increasing mass

8. Example

9. Kinetic Energy Energy of motion Energy an object has because it is moving

10. Kinetic Energy Can be calculated mathematically KE = (mass x velocity2)/2

11. Kinetic energy can be increased by: Increasing mass Increasing speed

12. Example

13. Another Example