Potential & Kinetic Energy

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