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# Chapter 6 Work Energy Power

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### Chapter 6 Work Energy Power

1. 1. Chapter 6 Work, Energy, Power
2. 2. Work <ul><li>The work done by force is defined as the product of that force times the parallel distance over which it acts. </li></ul><ul><li>The unit of work is the newton-meter, called a joule (J) </li></ul>
3. 3. Energy <ul><li>The amount of energy transferred to the object is equal to the work done. </li></ul><ul><li>Types of Energy </li></ul><ul><ul><ul><li>Kinetic Energy = “Motion Energy” </li></ul></ul></ul><ul><ul><ul><li>Potential Energy = “Stored Energy” </li></ul></ul></ul>
4. 4. Kinetic Energy <ul><li>Kinetic Energy is the energy possessed by an object because it is in motion. </li></ul>
5. 5. Gravitational Potential Energy <ul><li>Gravitational Potential Energy is the energy possessed by an object because of a gravitational interaction. </li></ul>
6. 6. Conservation of Energy <ul><li>Energy can neither be created nor destroyed, but only transformed from one kind to another. </li></ul>
7. 7. Power <ul><li>Power is the time rate of doing work. </li></ul>
8. 8. Power <ul><li>The unit of power is a joule per second, called a Watt (W). </li></ul>
9. 9. On to problems...
10. 10. <ul><li>Mission for Next Time: </li></ul><ul><li>Homework </li></ul><ul><ul><li>4.9 </li></ul></ul><ul><ul><li>4.10 </li></ul></ul>