Motion and forces

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Across
  1. 1. Halves the load.
  2. 5. class lever Effort in the center.
  3. 6. What keeps us on the ground.
  4. 9. Force that pulls a spinning object to the center.
  5. 12. 3 laws of motion
  6. 13. The force of two objects rubbing together.
  7. 15. And axle.
  8. 16. Holds stuff in place using threads.
  9. 17. 3 laws of _______.
  10. 18. (Inclined) flipped.
Down
  1. 2. The material that reduces (friction).
  2. 3. Newton's first law of motion explains this.
  3. 4. class lever Fulcrum in center.
  4. 7. class lever Load in the center.
  5. 8. Wheel and ____.
  6. 10. _______Galilei
  7. 11. The opposing force to (9 across).
  8. 14. Ramp.