Henry's linear motion crossword puzzle

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Across
  1. 1. – motion under only the influence of gravity | clue: dropping with no air resistance
  2. 4. – speed at a specific moment in time | clue: car’s speedometer now
  3. 5. – speed with a direction | clue: 60 mph north
  4. 6. – how one quantity changes compared to another | clue: miles per hour
  5. 9. – the rate at which velocity changes over time | clue: speeding up or slowing down
  6. 10. – total distance traveled divided by total time | clue: trip speedometer reading
  7. 12. – the single vector that represents the sum of two or more vectors | clue: diagonal of a parallelogram
  8. 13. – the parts of a vector along the x- or y-axis | clue: breaking the arrow into legs
Down
  1. 2. – the total time that has passed from start to finish | clue: stopwatch result
  2. 3. – a quantity with both magnitude and direction | clue: arrow with length and direction
  3. 7. – a quantity with magnitude only (no direction) | clue: temperature or mass
  4. 8. – compared to a frame of reference | clue: speed of a car as seen from another car
  5. 11. – how fast an object moves (distance/time) | clue: number on speedometer