States of matter

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Across
  1. 4. forming a 90 degree angle
  2. 5. used to say what is true
  3. 6. for every action, there is an equal and opposite reaction.
  4. 8. different in direction and position
  5. 9. when colliding objects bounce off of each other
Down
  1. 1. forces of two objects apply to each other
  2. 2. as someone says something
  3. 3. pushes perpendicular to the object surface
  4. 5. not able to stretch or bend easily
  5. 7. a piece of sports equipment that is used to hit a ball