simple machines

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Across
  1. 2. Transfer of energy that occurs when a force makes an object move
  2. 4. lid of a can is an example of a?
  3. 5. device that makes work easier
  4. 8. Machine that does work by only one movement of the machine
  5. 10. fulcrum
Down
  1. 1. the unit for work is?
  2. 3. A ramp is an example of a?
  3. 6. hoisting a flag is an example of a?
  4. 7. zipper
  5. 9. the rate at which work is done