A stone is dropped at t = 0. A second stone, with 2 times the mass of the first, is dropped from the same point at t = 180 ms. (a) How far below the release point is the center of mass of the two stones at t = 350 ms? (Neither stone has yet reached the ground (b) How fast is the center of mass of the two-stone system moving at that time? (a) Number i 155 Units m (b) Number i Units

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