Forces and Motion

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Across
  1. 1. a resisting force caused by two surfaces sliding past one another
  2. 3. a force, like the applied force, that occurs when two objects are touching
  3. 5. another word for air resistance
  4. 7. speed in a specific direction
  5. 9. the amount of matter in an object, in kg
  6. 16. speeding up, slowing down or changing direction
  7. 17. forces that do not sum to zero, cause accelerations
  8. 19. ___ causes acceleration
  9. 20. Newton's __ Law: every action force as an equal and opposite reaction force
  10. 21. ___ velocity, constant speed reached when air resistance is equal to gravitational force
  11. 22. the downward force of an object due to gravity
Down
  1. 2. the force of a surface pushing back up on an object
  2. 4. a force that acts over a distance, like magnetism
  3. 6. air ____, the force of air opposing an object's motion
  4. 8. balanced forces, net force = 0
  5. 10. ___ velocity; moving with no acceleration
  6. 11. the tendency of a stationary object to remain at rest, and a moving object to continue to move at a constant velocity
  7. 12. unit for force
  8. 13. a quantity with both magnitude and direction
  9. 14. how fast an object moves
  10. 15. the force of earth pulling on objects near earth's surface
  11. 18. a push or pull on an object
  12. 21. the force in a rope or string