She's better at math than at English, and I don't agree with her conclusion exactly, but it's interesting.
This looks like a high school science project. They got the (high school physics) formulae correct.
However, they Left off air friction(MIT would have included it), did not note the difference in friction between cleanly carved turns and sideways skiing, did not note how simply tipping a ski and loading it centrally will make it carve an arc, etc.
They got that perfect turns are cleanly carved though (don't let those smeary new-schoolers tell you any different)
That's about as lame a project as my science projects. Other kids were curing cancer, I was studying the difference in the sound between rubber and nylon basketballs. Seriously.