A stone is dropped at t ! 0. A second stone, with twice

Chapter , Problem 9

(choose chapter or problem)

A stone is dropped at t ! 0. A second stone, with twice the mass of the first, is dropped from the same point at t ! 100 ms. (a) How far below the release point is the center of mass of the two stones at t ! 300 ms? (Neither stone has yet reached the ground.) (b) How fast is the center of mass of the twostone system moving at that time?

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