motion

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Across
  1. 4. the sudden, forceful coming together in direct contact of two bodies
  2. 7. the total length of the path of an object
  3. 8. measures speed in a particular direction
  4. 9. quantity that has size and direction
  5. 11. rate of change of velocity
  6. 13. quantity that conveys how fast an object travels over a certain distance
  7. 14. vector sum of all the forces acting on an object
  8. 17. convert from one form to the other
  9. 18. tendency of an object to resist changes in its motion while either at rest or in constant motion
  10. 19. force of gravity acting on an object
Down
  1. 1. push or pull
  2. 2. change in position of an object and its direction
  3. 3. the relocation of energy from one place to another, usually in a different form
  4. 5. a measurement that refers to the amount of matter that makes up an object
  5. 6. quantity that has size but not direction
  6. 10. the capacity to do work
  7. 12. the ratio of the useful energy output of a system to the total input energy of that system
  8. 15. the maximum extent of size and the direction of an object
  9. 16. product of the force acting on an object