free fall vocabulary

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Across
  1. 3. fall when an object moves due to the influence of Earth's gravity
  2. 5. rate of change
  3. 6. change in velocity
  4. 7. quantity that designates how fast and in what direction a point is moving
  5. 8. the rate of change of position of an object in any direction
Down
  1. 1. speed total distance divided by the elapsed time to cover that distance
  2. 2. speed speed of an object at any given moment
  3. 4. time difference between ending and beginning of time
  4. 5. the motion of one object with respect to another object which is considered "fixed"