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Can You Really Run on Top of a Train, Like in the Movies?
To pull off this classic Hollywood stunt, you gotta know your physics!
Basically it's a set of models of the real world, which we can use to calculate forces and predict how the position and velocity of things will change. After a short time interval of 0.1 second, my coordinate system has the ball at the location (1, 1, 2), meaning it's 1 meter higher. Bob is standing on the side of the tracks (he can see the ball through the windows), so he uses a stationary coordinate system, in which I am moving.
Or read this on Wired
