Motion Crossword

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Across
  1. 2. shortest distance from start to stop plus direction
  2. 5. unit for speed
  3. 7. speed plus direction
  4. 8. fixed point or object that is used to measure the distance and direction another object has moved
Down
  1. 1. total distance divided by total time
  2. 3. speed at one instant in time
  3. 4. total length an object moves on its route from start to stop
  4. 6. rate at which the distance of travel changes