Physics Crossword Puzzle

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Across
  1. 2. mass
  2. 4. Parallel to surface, opposing direction of motion
  3. 5. force that works against and tries to prevent an object from moving or stop a moving object
  4. 8. contact forces
  5. 11. non contact forces
  6. 12. attractive force between all objects
  7. 16. force that slows down a moving object
  8. 19. An object at rest will stay at rest, and an object in motion will stay in motion at constant rate,unless acted upon by an unbalanced force
  9. 21. holds the protons and neutrons in the nucleus together
  10. 22. allows interaction within the atom resulting to radioactive decay of some nuclei
Down
  1. 1. change in position of an object with respect to time
  2. 3. the energy possessed by a body by virtue of its position relative to others
  3. 6. For every action there is an equal and opposite reaction
  4. 7. the amount of matter in an object
  5. 9. Opposite charges attract, Like Charges repel
  6. 10. result to change in the state of motion of the body on which it acts
  7. 13. A body acted on by a force will accelerate such that force equals mass times acceleration
  8. 14. upward push in spite the pull of gravity
  9. 15. forces that keep a stationary object at rest
  10. 17. force applied to an object by a person or another object
  11. 18. the force that gravity exerts upon an object
  12. 20. acts and opposes on objects traveling on air