Crossword - Acceleration

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Across
  1. 2. Speed with direction, like 5 m/s east
  2. 5. negative direction
  3. 6. something happening at one exact moment in time
  4. 7. how steep a line is on graph
Down
  1. 1. How fast velocity changes (speeding up or slowing down)
  2. 3. direction to the right
  3. 4. quantity with number and direction