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    Rock thrown upward from cliff reaches 18.6 m, lands 6.60 s later

    Homework Statement A rock is thrown vertically upward from the edge of a cliff. The rock reaches a maximum height of 18.6 m above the top of the cliff before falling to the base of the cliff, landing 6.60 s after it was thrown. How high is the cliff? Assume gravity= 9.8m/s2Homework Equations...
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