Cannonball on cannonball, this is all cannon

  • Duchess@piefed.linenoise.vip
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    2 days ago

    There’s no ‘ cancel out’ there would be a violent kinetic reaction as all the energy is released when the cannonballs collide. Depending on the muzzle velocity you would get something between smushed cannonballs to a massive expanding sphere of iron shrapnel and slag, assuming they were aligned perfectly.

  • owenfromcanada@lemmy.ca
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    3 days ago

    Not quite cannonballs but this clip from some charming Aussies shows what happens when you fire lots of things at each other. In short, if you could perfectly line them up and keep them from shattering, yeah they kinda cancel each other out correction: they’d bounce directly apart like billiard balls. In practice, they hit slightly off center and also shatter, results are what you’d probably expect.

    • Rhaedas@fedia.io
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      3 days ago

      If they hit perfect and don’t shatter, the energy has to go somewhere. Wouldn’t they act like billiard balls and bounce back in the opposite angle? In a perfect elastic conditions, of course.

      • owenfromcanada@lemmy.ca
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        3 days ago

        Hmmm… you’re right. I was originally thinking of it as two force vectors adding together to create a zero sum, but that wouldn’t be right because they’re two separate objects (if the cannonballs were perfectly adhesive to one another, then they’d create a single object and do what I originally thought).

        In perfect conditions they’d each transfer their kinetic energy into the other and they’d fly apart at the same velocity. So yeah, very much like billiard balls. Good intuition.

        I’m an electrical engineer, I only took static mechanics in school.

        • Rhaedas@fedia.io
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          3 days ago

          Now you’ve got me wondering about a perfect adhesive reaction and where the energy goes. The velocity is zero (before gravity begins to pull down), so I guess they both heat to mv^2 then however you convert that to actual heat. (I haven’t had a physics class in a very long time)

    • raef@lemmy.world
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      3 days ago

      Mythbusters covered this for musketballs. In the description of the myth, they said there were several examples recovered from American Civil War battlefields

        • Noxy@pawb.social
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          3 days ago

          when has Destin ever been “better than thou”?

          I’m not christian myself, hell I’m probably anti-theist at heart, but this is the guy who spoke at Skepticon about how his scientific mind and his religious mind coexist, and (according to this article) it was well received.

          As much as I abhor Christianity I really don’t think the SmarterEveryDay guy is the “holier than thou” type of Christian. He seems like the kind of jesus freak that I could actually sit down with and have a mutually respectful discussion and actually agree to disagree amicably.

          Of course I only know about his youtube presence. If he’s actually said or done bad shit outside of there, I’d like to know.

        • remon@ani.social
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          3 days ago

          Damn, I didn’t know he was disliked … wtf did he do (actually don’t answer that).

          • gazter@aussie.zone
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            3 days ago

            He committed the sin of having a religion. He occasionally- very occasionally- mentions his Christianity in some videos. I don’t recall any proselytizing, but I haven’t kept up to date.

            • remon@ani.social
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              3 days ago

              Huh, never noticed that in any of his videos, though I’m also not up to date with his content. Still, the videos stand on their own, I don’t care about his personal views if they don’t impact his works.