Physics Crossword Puzzle

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Across
  1. 2. Force that opposes motion between two surfaces. Caused by imperfections that catch on each other as objects rub past.
  2. 4. Force of gravity that acts on an object's mass
  3. 9. The longest side of a right triangle
  4. 11. Type of friction between a surface and an object moving relative to that surface
  5. 15. A quantity with only magnitude
  6. 16. Standard unit for force
  7. 17. Rate of change in velocity
  8. 19. Type of friction that increases with applied force
  9. 20. The amount of matter in an object
Down
  1. 1. A push or pull one object exerts on another object
  2. 3. Standard unit for length
  3. 5. Newton's Law that states that every action has an equal and opposite reaction
  4. 6. Newton's Law that states that a non zero net force causes an object to accelerate
  5. 7. Taking this trig function of an angle is equal to adjacent over hypotenuse
  6. 8. Speed with direction
  7. 10. Force that a surface exerts on an object that it supports
  8. 12. Standard unit for mass
  9. 13. A quantity with both magnitude and direction
  10. 14. An object's tendency to resist change to its status
  11. 15. Taking this trig function of an angle is equal to opposite over hypotenuse
  12. 18. Newton's Law of motion that states an object at rest will remain at rest and an object in motion will remain in motion if the net force is zero
  13. 19. Rate of change of distance