Newton, Force, & Gravity

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Across
  1. 4. tendency of an object to resist changing its motion
  2. 5. the more of this, the greater the inertia
  3. 6. a moving object with only gravity acting on it
  4. 7. speeding up or slowing down
  5. 9. speed and direction
  6. 15. when air resistance is equal to weight
  7. 16. unit of force named for brilliant scientist
Down
  1. 1. what a ball does when you drop it
  2. 2. the path that a satellite makes in space
  3. 3. two words that explain gravity everywhere
  4. 8. the planet we live on
  5. 10. sum of all forces acting on an object
  6. 11. push or pull
  7. 12. an area of space so dense that you cannot see it
  8. 13. changes as you go to different planet
  9. 14. the heavenly body that orbits Earth