1. Work & Power Mr. Skirbst Physical Science Topic 05

2. What is work?

3. Work is a force acting through a distance

4. Equation for Work W = (F)(d)

5. Equation for Work W = (F)(d) Work = force x distance

6. Equation for Work W = (F)(d) Work = force x distance (Joules) = (Newtons) (meters)

7. Example: A student who weighs 500 N climbs a flight of stairs 5 m high. How much work is done?

8. What is power?

9. Power is the rate at which work is done

10. Equation for Power P = W / t

11. Equation for Power P = W / t Power = work / time

12. Equation for Power P = W / t Power = work / time (Watts) = (Joules) / (seconds)

13. Example: If the student from the previous example climbed the stairs in 5 seconds, how much power was required of her?