> I feel that introducing deformation or other energy dissipation to the equation kind of takes it out of the “high school physics” realm, right? I don't think

> I feel that introducing deformation or other energy dissipation to the equation kind of takes it out of the “high school physics” realm, right? I don't think so. In my high school physics class I learned about both fully elastic and fully inelastic collisions. The math basically works out the same in the fully inelastic collision case, which I did here, https://news.ycombinator.com/item?id=40628932 https://news.ycombinator.com/item?id=40628932