Forces and Newton's Laws Unit Review Crossword Puzzle

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Across
  1. 3. a measure that has both size and direction
  2. 7. type of friction involved with ball bearings and wheels
  3. 9. pattern describing relationship between acceleration and mass when force is constant
  4. 10. objects that are touching can exert __________ forces on one another.
  5. 11. Newton's ___ Law - for every action force, there exists is an equal and opposite reaction force.
  6. 12. strongest type of friction, involved with stationary objects
  7. 13. how the acceleration changes when mass is halved with constant force
  8. 16. the force of gravity pulling an object down
  9. 18. In general, whenever forces act on an object in opposite directions, the net force is equal to the ___ between the two forces.
  10. 22. force of mutual attraction exerted by every object in the universe on every other object in the universe
  11. 24. force = mass _______________ acceleration (a mathematic operation)
  12. 25. The farther away two objects are from one another, the ___ the strength of gravity between them.
  13. 26. type of force required to produce acceleration
  14. 27. can be defined as a push or pull exerted on an object by another object
  15. 29. factor by which acceleration increases when force is tripled with for constant mass
  16. 30. type of friction involved when a book is pushed across a tabletop
  17. 33. Newton’s ___ Law - also known as the Law of Inertia: objects will stay still or keep moving in the same direction and same speed until they're acted upon by an unbalanced force
  18. 35. result in a net force of zero (2 words)
  19. 36. describes the state of an object when the net force on that object is zero
  20. 37. acceleration = force _______________ mass (2 words, a mathematic operation)
Down
  1. 1. pattern describing relationship between force of gravity and distance between objects (2 words)
  2. 2. Force varies with mass and ___.
  3. 4. type of friction involved when an object is moving through water or air
  4. 5. how the force of gravity changes when the product of masses is halved
  5. 6. pattern describing relationship between acceleration and force when mass is constant ("_____ly proportional")
  6. 8. The greater the masses of two objects are, the ___ is the force of gravity between them.
  7. 14. how the force of gravity changes when the distance between objects is halved
  8. 15. SI unit of force
  9. 17. the sum of all forces acting on an object (and considering the direction of each force) (2 words)
  10. 19. factor by which the force of gravity decreases when distance is doubled
  11. 20. If two forces act on an object in the same direction, the net force is equal to the ___ of the two forces.
  12. 21. Picture showing all the forces acting on an object (3 words)
  13. 23. When the net force is zero, an object ___ will stay ___. (2 words)
  14. 28. property of matter that an unbalanced force must overcome in order to change an object's velocity
  15. 31. changes for an object when the net force on that object is not zero
  16. 32. the direction that one force in an action-reaction pair points, relative to the other force in the pair
  17. 34. Newton’s ___ Law - the more force is applied to an object the faster it will accelerate. It also tells us that objects with a greater mass need a greater force to be applied in order to accelerate them.