Is Newtonian Mechanics Better for Describing the Trajectory of the Ball?

I like your organization of the topics there in terms of complexity. Maybe Einstein's view of gravity is more complete, but it's too complicated. And maybe this is also the argument you're making that some of these laws are just more useful in their explanation. So I think that a helpful way to go is to think of in what sense is Newtonian mechanics better for describing the trajectory of the ball?