Chapter 12 vocab

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Across
  1. 1. The attraction between any two objects because of their masses.
  2. 4. the force of gravity acting on an object
  3. 10. When the forces on an object are balanced, the net force is zero
  4. 11. a friction force that opposes the motion of an object over a surface
  5. 14. a push or pull that acts on an object
  6. 15. a friction force that acts on objects that are not moving
  7. 18. Law stating that the total momentum of a system does not change if no net force acts on the system
  8. 19. law For every action there is an equal or opposite reaction
  9. 20. a friction force that opposes of an object though a fluid
  10. 21. the SI unit for force
Down
  1. 2. Fluid friction acting on an object moving through the air
  2. 3. a friction force that acts on rolling objects, caused by the change in shape at the point of rolling contact
  3. 5. When an unbalanced force acts on an object, the object accelerates.
  4. 6. the constant velocity of a falling object when the force of air resistance equals the force of gravity.
  5. 7. The curved path of an object in free fall after it is givin an inward forward velocity The speed and direction an object is moving
  6. 8. law The acceleration of an object is equal to the net force acting on it devided by the objects mass.
  7. 9. the amount of matter in an object.
  8. 12. The tendacy of an object to resist a change in its motion
  9. 13. law The state of an object does not change as long as the net force acting on the object is zero
  10. 16. The product of an objects mass and its velocity
  11. 17. the overall force acting on an object after all of the forces are combined