I think so. Again, that's probably more of an engineering or physics question.
I can certainly tell you from experience that we absolutely see kids who are injured from hitting things within the bus. They're actually often not necessarily severe injuries, but lower-speed potential crashes that were the equivalent of fender-benders, in which they bumped the side and they have a big laceration on the side of their head, or something in that vein, from a stanchion or a metal post or something like that.
I can't speak further than that.