When I was your age, to get to school I had to walk uphill both ways, frequently during snowstorms. (It was good exercise.) Imagine walking downhill both ways — how easy that would be! Gravity would be a friend and not a foe! It’s so simple, even this bodyless robot can do it. Its golf club legs can amble in perpetuity, powered by nothing but its own forward momentum.
Who isn't amused by the rare and impressive science-savvy party trick? One that involves the potential to risk death death by flinging yourself Superman-like at a bouncy training ball, only to have it pop you back up in an amazingly graceful backflip? Before you cry "Sir Isaac Newton!," here are the physics behind this seemingly impossible stunt.