vocab

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Across
  1. 1. few moving parts
  2. 3. substance that reduces friction
  3. 7. equal and opposite reaction
  4. 13. goes in circle
  5. 15. pushing or pulling something
  6. 17. how fast something is
  7. 18. uses mechanical power
  8. 19. rate of doing work
  9. 21. rate of change
  10. 22. force exerted on machine
  11. 23. force exerted by machine
  12. 25. remain unchanged
Down
  1. 2. distance input force acts
  2. 4. more force means pushed faster
  3. 5. measure of energy transfer
  4. 6. increase with time
  5. 8. ratio of force the does work
  6. 9. rate work is done
  7. 10. friction from rolling
  8. 11. law of inertia
  9. 12. sub from velocity
  10. 14. rate of change of velocity
  11. 16. distance output force acts
  12. 20. caused by adhesion
  13. 24. there are four main types