CH 12 Forces

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Across
  1. 3. the first one to suggest that gravity is universal and affects all objects in the universe; SI unit for force (N)
  2. 5. acts on objects when they are rolling over a surface
  3. 6. a measure that has both size and direction; can be represented by an arrow
  4. 7. acts on objects when they are sliding over a surface
  5. 8. measures the force of gravity pulling downward on an object; SI unit is the Newton (N)
  6. 11. acts on objects that are moving through a fluid (liquid or gas)
  7. 12. the combination of all the individual forces acting on an object
Down
  1. 1. movement of an object in a curved path toward the ground because it has both a horizontal force and the downward force of gravity acting on it
  2. 2. acts on objects when they are resting on a surface
  3. 4. a force of attraction between things that have mass; on Earth the force that pulls objects down toward the ground
  4. 9. a force that opposes motion between any surfaces that are touching
  5. 10. a push or pull acting on an object; gravity, friction, and applied force