Physics Crossword Puzzle

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Across
  1. 3. It slows things down
  2. 4. How fast an object moves
  3. 7. Vector Quantity
  4. 9. Any push or pull
  5. 13. Sum of all the forces
  6. 14. Only has magnitude
  7. 15. Vector quantity
Down
  1. 1. Always Negative
  2. 2. Change in velocity/time
  3. 5. Has magnitude and direction
  4. 6. Equals the object's change in momentum
  5. 8. Gravity is the only force acting upon it
  6. 10. Amount of matter
  7. 11. Path of
  8. 12. mass*acceleration