Planetary Motion and Gravitation; Projectile Motion

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Across
  1. 1. series of images showing the positions of a moving object at regular time intervals
  2. 4. force of attraction between 2 objects, proportional to the masses
  3. 5. path through space
  4. 7. the change in position divided by the time during which the change occured, the slope of an object's position-time graph
  5. 9. yet another Kepler law, square of the ratio of the periods of any two planets
  6. 11. a vector that results from the sum of two other vectors
  7. 13. type of circular motion, movement of an object at a constant speed around a circle with a fixed radius
  8. 15. all forces come in pairs, 2 forces in a pair act on different objects
  9. 16. one of Kepler's laws, paths of planets ellipses, Sun at one focus
  10. 17. objects attract other objects with a force that is proportional
Down
  1. 2. quantity that measures an objects response to gravitational force
  2. 3. object shot through the air
  3. 6. object moves in a circle, net force toward center of circle
  4. 8. center seeking acceleration of an object
  5. 10. another Kepler law, imaginary line from Sun to a planet
  6. 12. fictitious, nonexistent force
  7. 14. measure of the object's resistance to any type of force