Forces and Newton's Laws

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Across
  1. 2. the force of gravity acting on an object's mass
  2. 4. a fluid friction provided by the atmosphere is called air _________
  3. 8. a quantity with both magnitude and direction
  4. 10. action and reaction forces happen at the same _______
  5. 11. product of mass and velocity
  6. 15. velocity resulting from the balance of air resistance and weight
  7. 17. any change in an objects state of motion
  8. 20. measure of the inertia of an object
  9. 21. every object in the universe _________ every other object in the universe
  10. 22. if the action is hammer hits nail, the reaction is _____ hits hammer
  11. 24. an object will stay in motion at the same speed and in the same _________ unless acted upon by an outside force
  12. 26. a push or a pull
Down
  1. 1. the force of gravity decreases as the _______ between two objects increases
  2. 3. unit of force
  3. 5. mathematical relationship between mass and acceleration
  4. 6. an object in motion tends to remain in ________
  5. 7. a force that opposes motion
  6. 9. an object at rest tends to remain at _________
  7. 12. this kind of force causes an object to accelerate
  8. 13. tendency of an object to resist changes in motion
  9. 14. mathematical relationship between force and acceleration
  10. 16. when all the forces on an object are balanced the net force is _______
  11. 18. scientist who coined the term inertia
  12. 19. force acting downward towards the center of the earth
  13. 23. overall force acting on an object after all the forces are combined
  14. 25. when an object exerts a force on a second object, the second object exerts an equal but ________ force on the first object