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How do you find the power exerted by gravity on a falling object, given work, time, and displacement?

You hold a 50 N bowling ball over a set of pins that are 20 meters below. Once you release the ball, it takes 2 seconds for the ball to hit the pins, and gravity does 1000 Joules of work on the the ball. How much power does gravity use to bring the ball down?

Summary

  1. d- meters
  2. N- Newtons
  3. Fg- force of gravity
  4. Wg- work that gravity does
  5. J- Joules
  6. t- time
  7. s- seconds
  8. Pg- power that gravity delivers
  9. W- Watts

Notes

    1. It's always a good idea to rewrite what you are given in a problem
    1. Wg- work done by gravity J- Joules
    2. t- time s- seconds
    3. d- distance m- meters
    4. Fg- force of gravity N- Newtons
    5. Pg- Power that gravity uses
    1. P- power
    1. P- power
    2. W- work
    3. t- time
    1. Pg- power that gravity delivers
    2. Wg- work done by gravity
    3. t- time
    1. Wg- work done by gravity
    2. t- time
    1. Pg- power that gravity delivers
    2. J- Joules
    3. s- seconds
    1. Pg- power that gravity delivers
    2. Watts- units of power