Greitis

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Across
  1. 1. the highest possible speed
  2. 3. fastest lady in the world (first name)
  3. 6. standard distance measuring unit
  4. 11. standard temperature measuring unit
  5. 12. a popular temperature measuring unit in North America
  6. 13. t stands for
  7. 14. something occurring continuously over a period of time
  8. 16. standard time measuring unit
  9. 18. a popular temperature measuring unit in Europe and most continents
  10. 20. v0 stands for
Down
  1. 2. the fastest car brand in the world
  2. 4. v stands for
  3. 5. standard speed measuring unit
  4. 7. fastest person in the world
  5. 8. meters standard volume measuring unit
  6. 9. per means
  7. 10. the fastest thing in the universe
  8. 15. the rate of change of velocity
  9. 17. a popular speed measuring unit
  10. 19. a very slow animal