please hear that guy, the code is read much more often than it is written, mathematically named variables are really a bad pattern, that will haunt you and your

please hear that guy, the code is read much more often than it is written, mathematically named variables are really a bad pattern, that will haunt you and your team in just months, instead of just `v` use `velocity_of_ball`, and stick to the pep8 standards. I come from other engineering background and have known many smart colleagues that code for run many kind of simulation, but after some month don't even them can understand the code