Pinball Crossword Puzzle

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Across
  1. 5. / Energy of position.
  2. 6. / Used as the backstop on a pinball machine.
  3. 7. / a2 + b2 = c2
  4. 9. / Weight
  5. 14. / Bounces the ball back into play.
  6. 15. / Has a fulcrum, a force pushing on it, and a load, is a simple machine.
  7. 16. / Makes the points for electrical-mechanical pinball machines.
  8. 17. / The name of Newton’s First Law of Motion.
  9. 19. / Long side of a triangle.
  10. 20. / Invented the pinball machine.
  11. 21. / First pinball machine.
  12. 22. / The action of two objects rubbing against one another.
Down
  1. 1. / Most expensive pinball machine.
  2. 2. / The change in velocity divided by the time.
  3. 3. / Most popular pinball machine.
  4. 4. / Laws that everything has to follow.
  5. 8. / Has one 90 degree angle.
  6. 10. / Energy of motion.
  7. 11. / A 3rd class lever used in pinball.
  8. 12. / The speed of something in a certain direction.
  9. 13. / The study of matter and motion.
  10. 18. / A ramp which is a simple machine, makes work easier.