Ch 10 Forces

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Across
  1. 2. the force of attraction between all objects with mass
  2. 6. the total momentum of a system remains constant unless acted on by external forces
  3. 8. friction that acts when two surfaces slide past each other
  4. 9. an object that revolves around another object in space
  5. 13. the constant speed reached when air resistance equals the force of gravity
  6. 14. forces that do not cancel each other and cause a change in motion
  7. 16. the force that keeps an object moving in a circular path
  8. 18. the friction that prevents surfaces from starting to slide past one another
Down
  1. 1. a type of fluid friction that opposes the motion of objects moving through air
  2. 3. motion in which gravity is the only force acting on an object
  3. 4. a push or pull that acts on an object
  4. 5. friction that acts when an object rolls over a surface
  5. 7. a force that opposes the motion between two surfaces that touch
  6. 10. friction that acts on objects moving through a fluid such as air or water
  7. 11. forces that are equal in size and opposite in direction, producing zero net force
  8. 12. the product of an object's mass and velocity
  9. 15. the overall force acting on an object after all individual forces are combined
  10. 17. the tendency of an object to resist changes in its motion