Topic: French

"At what speed does he run?"

Translation:À quelle vitesse court-il ?

January 14, 2018

4 Comments

https://www.duolingo.com/Alde.bj
  • 38

À quelle rapidité court-il? Why this sentence wasn't correct.

January 14, 2018
https://www.duolingo.com/Sitesurf
Mod

    And "la vitesse" is a unit of measure, which "la rapidité" is not.

    January 17, 2018
    https://www.duolingo.com/Ripcurlgirl

      A difference in nuance, I suspect. Rapidité tends to be used in a figurative sense meaning "quickness", speediness", "promptness", "briskness", "swiftness" etc of service or response to a letter or request.

      On the other hand vitesse is used more in relation to actual speed, velocity and physical movement.

      January 14, 2018
      https://www.duolingo.com/PredragZec

        What kind of question is this? Yeah right, I always carry a radar to mesure the speed of random people...

        November 23, 2018
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