I was watching a SciFi tv show where large objects had an outer speed limit of 18000 kph and that got me wondering what things in everyday life are faster than even 500 kph.

I know bullets can be fast, but they are not exactly everyday life (at least in my life).

I included mass for obvious relativistic reasons.

  • trolololol@lemmy.world
    3·
    11 hours ago

    Rockets?

    International space station goes around the earth at about 7km/s if I recall correctly. And it’s quite big.

    That’s the kind of speed of any rocket going to meet with ISS or being put into earth orbit. Things reentrying from orbit hit the atmosphere at about that speed too.

    Things going or coming to the moon need slightly more, I think ballpark is 10km/s, and above that you’re travelling to Mars, asteroids, Venus, Jupiter, etc etc.

      • trolololol@lemmy.world
        2·
        6 hours ago

        I get your point but I’ll nitpick anyways:

        Isn’t satellites as much part of everyday life as submarine internet cables, and our lives would be radically different without satellites but having only submarine cables?

        Or do we need to see them to believe it?

        • PeriodicallyPedantic@lemmy.ca
          1·
          6 hours ago

          Hmmmm that’s a good point.

          I still wouldn’t count that as every day life because you’re not physically interacting with the satellite or submarine internet cables, even if you’re interacting with the effects of their existence.

          But now I have to justify why my stance of “being physically near but still unable to see or touch directly” (as an internal mechanism of something) is any more “everyday life”. It feels like an internal mechanism counts as just as every-day as the thing its a part of, but is it really?

          I don’t have a solid justification. It just feels different to me.