physics crossword

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Across
  1. 3. the force of g acting on an object's mass
  2. 7. a scientific rule that state every object in the universe attracts every other object
Down
  1. 1. a push or pull on an object that can cause it to move, stop, or change direction
  2. 2. the space between 2 objects
  3. 4. the force that pulls objects to each other
  4. 5. the amount of matter in an object
  5. 6. a force that pull a object to one another