Motion and Force Puzzle

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Across
  1. 2. ratio of distance to time
  2. 8. has a # value and direction
  3. 11. measure of how far an object moved
  4. 13. the friction force that acts on objects that are not moving
  5. 15. opposes the motion of an object through a fluid
  6. 17. tendency of an object to resist any change in its motion
  7. 19. maximum velocity reached by a falling object
  8. 20. speed of an object and direction of its motion
Down
  1. 1. distance and direction of an object's change in position from the starting point
  2. 3. when gravity is the only force acting on an object
  3. 4. unbalanced forces that are not opposite and equal
  4. 5. the opposition that a substance offers
  5. 6. a force that opposes the direction of motion of an object as it slides over a surface
  6. 7. a force that opposes the motion of objects that touch as they move past each other
  7. 9. force that acts on rolling objects
  8. 10. the fluid friction action on an object moving through the air
  9. 12. rate of change of velocity(speed and direction)
  10. 14. a push or pull that one body exerts on another
  11. 16. the force of gravity on an object
  12. 18. natural force that causes things to fall towards earth and depends of the mass of the objects and distance between them