2. ENERGY, WORK, POWER Conservation of Energy SC.CE.05.04

3. WORK IS DONE WHEN: a force moves a body a distance W=Fd

4. ENERGY IS:  The capacity to do work

5. ENERGY IS:  The capacity to do work  ENERGY=WORK

6. ENERGY IS:  The capacity to do work  ENERGY=WORK  So Energy= Force x distance E=Fd

7. UNIT OF ENERGY:  Since Energy=Force x distance, the unit of energy must include a unit of force and distance

8. UNIT OF ENERGY:  IN PHYSICS THE UNIT OF ENERGY IS THE JOULE (J)

9. UNIT OF ENERGY:  1 Joule = 1 Newton of force × 1 meter of distance

10. UNIT OF ENERGY:  1 J=1 N ×1 m

11. UNIT OF ENERGY:  Since Energy=Force x distance, the unit of energy must include a unit of force and distance  IN PHYSICS THE UNIT OF ENERGY IS THE JOULE (J)  1 Joule = 1 Newton of force × 1 meter of distance  1 J=1N × 1m

12. REVIEW QUESTIONS:  How does energy relate to work?  Energy is equivalent to work

13. REVIEW QUESTIONS:  What unit is used to express energy?  The Joule (J)

14. REVIEW QUESTIONS:  The Joule is an abbreviation of what two units?  Newton and meter (Force and distance)

15. POWER IS:  The RATE at which work is done

16. POWER IS:  Found by dividing amount of work done by time

17. POWER IS:  Power=Work/time

18. POWER IS:  P=W/t

19. POWER IS:  The RATE at which work is done  Found by dividing amount of work done by time  Power=Work/time  P=W/t

20. OK…E=W=Fd & P=W/t  So, P=Fd/t

21. OK…E=W=Fd & P=W/t  The primary unit of power in physics is the watt (W)

22. OK…E=W=Fd & P=W/t  One watt = One Joule/second

23. OK…E=W=Fd & P=W/t  So, P=Fd/t  The primary unit of power in physics is the watt (W)  One watt = One Joule/second