Physics Crossword Puzzle

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