When my sister and I were kids, we were thrown clear from a Scrambler in a local carnival. We were tiny things and this was back in the days when people were less litigious, carnival rides were just thrown together and often didn’t have working (and occasionally existing) seat belts, and child safety was “oh well, have another kid.”
She was concussed, and to this day she can’t sit out in the sun because of that concussion. (I was unharmed, but that’s just how it always goes with me.)