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Across
  1. 3. the force that resists motion when the surface of one object comes in contact with the surface of another
  2. 5. The rate of change of position of an object in any direction
  3. 8. a physical quantity that is completely described by its magnitude
  4. 11. forces acting at the same point with equal magnitude but opposite direction, resulting from Newton's third law
  5. 13. the rate of change of the velocity of an object.
  6. 14. pair
  7. 15. the universal force of attraction acting between all matter
  8. 16. the change of momentum of an object when the object is acted upon by a force for an interval of time.
Down
  1. 1. a quantity that has both magnitude and direction
  2. 2. the measure of the amount of matter in a body
  3. 4. state of rest
  4. 6. the change in position of an object
  5. 7. motion of an object thrown (projected) into the air when
  6. 9. The push or pull on an object with mass causes it to change its velocity
  7. 10. the sum of all the forces acting on an object
  8. 12. the product of an object's mass and velocity