Two rocks are either dropped or thrown at the same time from the same cliff. Graphs for part of the motion of the rocks are shown for a coordinate system in which up is the positive vertical direction and the positive horizontal direction is away from the cliff. The origin is at the point at which the rocks were released. For this exercise, you should ignore air resistance. Rock A Rock B v (horizontal) v (horizontal) time time v (vertical) v (vertical) time time

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