Physics crossword

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Across
  1. 2. what the letter I represents in a circuit
  2. 4. unit used for current
  3. 9. moving objects have ____ energy
  4. 12. _____ hand rule
  5. 13. the force acting on every object with mass on earth
  6. 14. what flows from negative to positive
  7. 15. an unknown angle
  8. 18. the study of motion
  9. 19. when an object is only acted on by the force of gravity
Down
  1. 1. the longest side in a right angle triangle
  2. 3. who has 3 laws
  3. 5. which theorem is a² + b² = c²
  4. 6. every action has its equal opposite _____
  5. 7. what orientation y represents
  6. 8. symbol to represent ‘a change in’
  7. 10. time can never be
  8. 11. energy before an object moves
  9. 16. another word for 274 deg c
  10. 17. what orientation x represents