Honestly not that bad, tbh. You can easily beat those numbers with a hit from a car.
Is friction really negligible here?
It’s probably pretty important. This paper on the terminal velocity of water droplets shows an upper limit of around 10m/s. And terminal velocity is reached in under 6m.
Thats also roughly the amount of force the Brachiosaurus would need to exert with just stomach and throat muscles to get the vomit up that high. I think they wouldn’t be able to do that and would constantly get heart burn in their 30’ esophagus.
Much more likely is that they lowered their heads in humiliation and let the vomit slide all that way out.
But they were herbivores…? The image shows bones in there
Well someone cropped the part of this image where this maths experiment was inspired by trying to figure out how a small dinosaur died in a stranger crater.
That image is an outline of the fossil millions of years later, not a drawing of puke containing bones or a dinosaur getting instantly defleshed
Are we sure they could vomit?
A question I never thought I’d want to have the answer to.
Do birds vomit?
not sure, but 2 seconds is thinking about living animals tells us that that would probably bend over first.
Maybe not projectile vomit but they absolutely could reverse peristalsis just like any vertebrate. Giraffes chew their cud while upright after all. Peristalsis is agnostic to how high it’s pumping, since there is no functional loss in strength.
Edit: https://www.shutterstock.com/video/clip-1234348-watch-cud-ball-travel-down-giraffe’s-neck
they absolutely could reverse peristalsis just like any vertebrate.
AFAIK Horses cannot vomit, and I also was told that mice and rats cannot vomit.
What I’m describing isn’t actual vomiting either, but more like regurgitating. Rodents can do that, though horses can’t (because they can’t even belch, they’ve got a one way valve).
Ruminants like sheep and giraffes also don’t externally vomit but they do internally vomit which makes stuff change chambers in their stomach.
