Physics Crossword!

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Across
  1. 4. What is mass times acceleration?
  2. 5. This energy relates to an object stretching or compressing
  3. 7. This energy relates to motion
  4. 8. What is the slope of the position vs time graph?
  5. 9. What direction is left?
Down
  1. 1. What is true about forces when velocity stays constant?
  2. 2. What is mass times velocity?
  3. 3. What is the slope of a velocity vs time graph?
  4. 6. A quantity that stays the same for a system over time is ______