• Kairos@lemmy.today
    link
    fedilink
    arrow-up
    49
    arrow-down
    1
    ·
    3 months ago

    Just divide by 3.6

    Example:

    10 km /h * 1000 m / km = 10,000 m /h

    10,000 m/h * 1h/3600s = 10,000/ 3,6000 m/s = 10/3.6 m/s

      • the_crotch
        link
        fedilink
        arrow-up
        6
        arrow-down
        4
        ·
        3 months ago

        Shit like this is why metric needs to be replaced with a base12 system. Base10 is for children who still count on their fingers.

        • BlueMagma
          link
          fedilink
          arrow-up
          2
          ·
          3 months ago

          Dozenal for the win !!! It will never happen though, but dreaming is allowed

        • GoodEye8@lemm.ee
          link
          fedilink
          English
          arrow-up
          1
          ·
          3 months ago

          If at could start at blank slate then base 12 would make a better foundation, but base 10 is far too ingrained into every aspect of our life. It’s much easier to convert time into base 10 than it would be to convert the world into base 12.

    • MisterFrog@lemmy.world
      link
      fedilink
      arrow-up
      3
      arrow-down
      1
      ·
      3 months ago

      I used to do it this way in highschool, but could never remember if it was divide by or multiply by 3.6

      Instead I now do it as you have shown, except it all goes in the same expression.

      10 km/h * 1000 m/km * 1h/3600s = 2.778 m/s

      No need for the extra steps. Slap it all in the same expression and put it in the calculator (being careful to check that the units cancel as intended)

      • Fushuan [he/him]@lemm.ee
        link
        fedilink
        English
        arrow-up
        1
        ·
        3 months ago

        M/s is faster (lower number) than km/h so… That should give you enough explanation to understand whether you need to divide or multiply 3.6 when converting.

        • MisterFrog@lemmy.world
          link
          fedilink
          arrow-up
          1
          ·
          3 months ago

          It just never stuck. Just for me personally it’s easier to remember the base conversions of 1 km = 1000 m and 1 hr = 3600 and do the maths.

          Just my own personal preference, and when dealing with more complex units, is the only way.