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A rock is shot up vertically upward from the edge of the top of the building. The rock reaches its maximum height 2 s after being shot. Them, after barely missing the edge of the building as it falls downward, the rock strikes the ground 8 s after it was launched. Find

(a) upward velocity the rock was shot at;

(b) the maximum height above the building the rock reaches; and

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Category:- Physics
Reference No.:- M9896621

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