Vocabulary

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Across
  1. 1. the amount of something
  2. 3. a push or pull
  3. 5. a force that slows down the motion of an object that is touching something else as it moves
  4. 7. unequal forces acting on an objet
  5. 8. the act of moving
Down
  1. 1. the outer layer
  2. 2. equal forces acting on an object
  3. 4. the line along which something travels
  4. 6. the same