Why is airspeed measured in knots?

Related questions

1. Why does true airspeed decrease with altitude?
2. What is airspeed velocity?
3. Does wind affect true airspeed?
4. What is vs1?
5. What is true airspeed TAS )?
6. Which is better vs1 or si1?
7. How does Indicated Airspeed work?
8. How fast is hypersonic?
9. How much does true airspeed increase with altitude?
10. Does true airspeed increase with temperature?

Tags

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2. #minute
3. #system
4. #longitude
5. #simply
6. #instead
7. #measurements
8. #effectively
9. #navigation
10. #kilometers
11. #meridian
12. #ships
13. #reason
14. #asking
15. #speed
16. #because
17. #knots
18. #miles
19. #latitude
20. #global
21. #nautical