crossword physics puzzel

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Across
  1. 4. involves magnitude and direction
  2. 6. push or pull
  3. 9. rate of change of velocity over time
  4. 10. resists sliding and slows it to a stop
  5. 13. matter in an object
  6. 14. same magnitude different direction of forces
  7. 15. rate of change any direction
Down
  1. 1. The force that makes things fall
  2. 2. the difference in positions
  3. 3. where gravity is the only force acting
  4. 5. amount of a moving body by mass and velocity
  5. 7. all forces acting on an object
  6. 8. only magnitude
  7. 11. stays the same unless something acts upon it
  8. 12. certain amount of force applied for a set time