Blake's terrible crossword

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Across
  1. 7. change in speed and distance
  2. 10. measure of distance that travels within a given time.
  3. 11. =massxacceleration
  4. 13. Explains how particles in matter behave
  5. 14. what else looks like a triangle? Hint: Synifies change and is from the Greek alphabet
  6. 15. how much space makes up an object
Down
  1. 1. Newton's Third Law
  2. 2. energy that is stored
  3. 3. anything that has mass and volume
  4. 4. A force that applies on everything all the time
  5. 5. how much matter is within an object
  6. 6. energy that is in motion
  7. 8. ability to cause change
  8. 9. measurement of force applied on an object
  9. 11. force that works against you.
  10. 12. amount of heaviness or mass