physics

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Across
  1. 1. amount of matter in something
  2. 4. Speed with direction
  3. 5. how long the area is between time
  4. 7. newtons second law
  5. 8. newtons first law
  6. 9. how long something takes to travel
Down
  1. 2. the rate of covering distance
  2. 3. stays at the same rate
  3. 6. a push or a pull
  4. 7. of action and reaction