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Answer to Question #6293 in Mechanics | Relativity for mark

Question #6293
An object is dropped from a platform 400 ft high. Ignoring wind resistance, how long will it take to reach the ground?
Expert's answer
s = gt^2/2
t = sqrt(2 s/g) = sqrt(2*400 ft/32 fts^-2) = 25 s

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