Tracy's puzzle

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Across
  1. 3. Whenever work is done, energy changes is known as the work- energy ________
  2. 6. The unit of energy and work
  3. 8. - Giving the ability to do work
  4. 10. The ratio output force to the input force in a machine is the mechanical ________
  5. 11. Concept that underlies every machine
  6. 14. - The energy that is in motion
  7. 16. - the law of _______ of energy States that energy can’t be created or destroy
  8. 18. - The energy that is stored in an object
Down
  1. 1. A machine that’s like a stair
  2. 2. Going against another force
  3. 4. device use to change direction
  4. 5. The rate at which work is done
  5. 7. used to change the direction of the force
  6. 9. Joules per second
  7. 12. the ratio of useful work output to total work input
  8. 13. The lever can be relatively close
  9. 15. the load.
  10. 17. A lever that can