Work, Force, and Simple Machines

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Across
  1. 2. / A rod that passes through the middle of the wheel that is a simple machine
  2. 4. / Push or pull
  3. 5. / Simple machine attached to an axle
  4. 9. / Resistance of motion when one object rubs against another
  5. 11. / An inclined plane wrapped around a pole which holds thing together
  6. 12. / Inclined plane usually found at a playground
  7. 14. / A path that something takes to reach a specific place
  8. 15. / A lever usually found at the playground
  9. 17. / A type of a simple machine that is made of a wheel with a rope
  10. 18. / How many simple machines are there?
Down
  1. 1. / A simple machine used to separate or secure two objects
  2. 2. / Wedge used for chopping wood
  3. 3. / Rate of doing work
  4. 4. / Point on which a lever rests or is being supported
  5. 5. / Using force to move an object
  6. 6. / Two levers attached together for cutting paper
  7. 7. / Wedge used for cutting food
  8. 8. / How many classes of levers are there?
  9. 10. / How far away something is
  10. 13. Plane / A simple machine with a flat surface and one end higher than the other
  11. 16. / Pulleys are used to raise this on a sailboat