Pinball Crossword Puzzle

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