🪂 Newtonian Gravity - 2D Free Fall with Air Drag and a Vacuum Twin

2D companion of the Newtonian gravity sim: a falling object with quadratic air drag beside its vacuum twin, force arrows, speed against time with the exact tanh solution, impact speed against height and checks against the analytic motion.

2D · HTML5 Canvas 2D · 60 FPS target · runs fully client-side, no install