Motion

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Across
  1. 4. the property of a body that causes it to have weight
  2. 7. an increase in rate of change
  3. 9. a force that moves things and materials downhill
  4. 11. a force that opposes motion between 2 surfaces that are in contact
  5. 12. a process of becoming larger or longer or more numerous
  6. 13. a change downward
  7. 15. force equal forces acting on the force in the opposite direction
Down
  1. 1. force that cause change in motion
  2. 2. the property created by the space between two objects
  3. 3. change of position that does not entail a change of location
  4. 5. the combination of all forces acting on an object
  5. 6. the continuum of experience in which events pass to the past
  6. 8. uninterrupted in time and indefinitely long continuing
  7. 10. distance traveled per unit time in one direction
  8. 11. push or pull
  9. 12. the tendency of something to stay in rest or motion
  10. 14. a rate at which something happens