Force and Motion crossword

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Across
  1. 4. the great size or extent of something.
  2. 6. A diagram showing the forces acting on the object.
  3. 7. When the forces acting on an object have equal strength and act in opposite directions
  4. 9. the force applied in one direction is greater than the force applied in the opposite direction.
Down
  1. 1. the resistance that one surface or object encounters when moving over another.
  2. 2. the action or process of moving or being moved.
  3. 3. a place or object used for comparison to determine if something is in motion
  4. 5. the force that acts in the opposite direction to an object moving through the air
  5. 8. the force that attracts a body toward the center of the earth, or toward any other physical body having mass.