Chapter 12 Vocab

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Across
  1. 2. law stating that the total momentum of a system does not change if no net force acts on the system
  2. 7. the constant velocity of a falling object when the force of air resistance equals the force of gravity
  3. 8. the amount of matter in an object; a measure of the inertia of an object, which depends on the amount of matter the object contains
  4. 10. a frictional force that acts on rolling objects, caused by the change in shape at the point of rolling contact
  5. 11. a force that opposes the motion of objects that touch as they move past each other
  6. 12. a friction force that opposes the motion of an object through a fluid
  7. 14. the force of gravity acting on an object
  8. 15. fluid friction acting on an object moving through the air
  9. 17. a push or pull that acts on a object
Down
  1. 1. the curved path of an object in free fall after it is given an initial forward velocity
  2. 3. a friction force that acts on objects that are not moving
  3. 4. the SI unit for force
  4. 5. the attraction between any two objects because of their masses
  5. 6. the overall force acting on an object after all the forces are combined
  6. 9. a friction force that opposes the motion of an object as it slides over a surface
  7. 13. the product of an object’s mass and its velocity
  8. 16. the tendency of an object to resist a change in its motion