gravity and force

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Across
  1. 2. the rate at which someone or something is able to move or operate
  2. 4. measure of the amount of material it contains
  3. 6. a quantity having direction as well as magnitude
  4. 7. the acting or process of moving or being moved
  5. 8. you have to use this to really move something
  6. 9. the universal force of attraction acting between all matter
Down
  1. 1. an amount of space between two things or people
  2. 3. put or arrange in a particular place or way
  3. 5. a regular repeating path
  4. 6. the speed of something in a given direction