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This file shows gravitational forces and friction on a bouncing ball (all my own code). Just pick the ball up and throw it... By Josh Tarr
Experiment in 3d with the CatapultThinking logo. Swarm, spin, trace, and swim behaviors compound with interesting results. Lots of fun. By Jason Short
A nice collision effect example - just have look ! By Matthias Kannengiesser
generates infinite mouse tracers with different velocity. By Peter Schneider
This "fly-back" method is more mathematically exact than others on this site. It also has adjustable speed, and a tutorial box that shows you how it was done. By Ben Davis
A set of gravity restricted objects joined by lines, bounce vertically with growing shadows. By James Gauld

