silly i think you got it.

i didn't quite understand the graph you made (what did you plot it with, btw?), but seeing you got a nice going parabola out of it, i think the sort-of-multiplication of gravity and force resulted in the correct trajectory.

if you did 3D modelling and graphics, maybe you know something about matrix multiplications? afaik the "tensors" (which are these .. arrays things afaik -- disclaimer: i haven't read the book yet) in quantum mechanics are kind of like matrices, only more different. they're sort of like what a number is to a matrix, a matrix is to a tensor. but in the end they're just mathematical operators.

also, i really must admit, i know hardly anything about it .. (but my gf does ^__^ she's an astronomy student and has to learn Everything about the Universe, from the small Quantum stuff up to the big Cosmology things)

and btw, LMNO, that "read a line, stop breathe, don't read further until you understand it" method is pretty much the way i used to prepare for every math-related exam i had to do at the university. it works good for me