Force and Motion crossword

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Across
  1. 4. Test to gather data
  2. 5. Italian scientist who studied motion
  3. 6. Space between two points
  4. 9. Proportional: One increases as the other decreases
  5. 14. Space with no matter
  6. 19. Rate of change of velocity
  7. 20. Force of gravity on an object
  8. 21. Distance from center to edge
  9. 22. Amount of matter in an object
  10. 24. Force pulling objects together
  11. 25. Our planet
Down
  1. 1. Feeling of no weight
  2. 2. Force pulling objects towards Earth
  3. 3. Relating to the sky or space
  4. 7. of Attraction: Pull between objects
  5. 8. law of gravitation: Describes gravitational force
  6. 10. Falling without air resistance
  7. 11. Famous physicist who discovered gravity
  8. 12. Gravitational Constant: Numerical value in gravity equation
  9. 13. Opposing force
  10. 15. Applicable everywhere
  11. 16. Force: Attraction between masses
  12. 17. Imaginary line around Earth
  13. 18. Scientist who studies matter and energy
  14. 23. Proportional: Increases or decreases at the same rate