work and machines

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Across
  1. 3. for a force to do work on an object it must act in the same ______ as the object moves
  2. 6. the percentage of work input that becomes work output
  3. 10. this is the type of force that is exert by a machine
  4. 12. the rate at which work is done
  5. 13. this type mechanical advantage is equal to output force divided to input force
  6. 14. this advantage is the number of times he machine increases the input force
Down
  1. 1. the SI unit of measure for distance
  2. 2. the SI unit of measure for power
  3. 4. the SI unit of measure for force
  4. 5. this is the type of force that you exert on a machine
  5. 7. this type of mechanical advantage does not take friction into consideration
  6. 8. the product of force times distance
  7. 9. the SI unit of measure for work
  8. 11. a device that makes work easier