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If a steel ball is tossed from the top of the Berj Khalifa in Dubai, the tallest building in the world, its height above the
If a steel ball is tossed from the top of the Berj Khalifa in Dubai, the tallest building in the world, its height above the groundtseconds after it is dropped will bes(t) = 271716t2
feet (neglecting air resistance).
(a) How long will it take to reach the ground? [Hint: Find when the height equals zero.] (Round your answer to two decimal places.)
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