life matter.

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Across
  1. 2. to pull objects toward one another
  2. 5. to separate or pull apart.
  3. 6. a force between an object and the surface it is moving over
  4. 8. how fast an object is moving
Down
  1. 1. anything that has mass and takes up space
  2. 3. the movement when two objects hit each other
  3. 4. speed in a particular direction
  4. 6. a push or a pull that can change the motion of an object
  5. 7. the amount of the matter that makes up an object
  6. 9. to apply force