science

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Across
  1. 3. The force that one surface exerts on another when the two surfaces rub against each other
  2. 4. The motion of a falling object when the only force acting on its graity
  3. 8. The force that pulls object toward each other
  4. 9. Equal forces acting on an object in opposite directions
  5. 10. The overall force on an object when all the individual forces acting on it are added together.
Down
  1. 1. The force of gravity on an object at the surface of a planet
  2. 2. A unit of measure that equals the force required to accelerate 1 kilogram of mass at 1 meter per second
  3. 5. A push or pull exerted on an object
  4. 6. The amount of matter in an object
  5. 7. forces Forces that produce a nonzero net force, which change an objects motion