NickyGG NickyGG

27-04-2018
Mathematics

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A ball is dropped from a height of 64 feet. Its height, in feet, can be modeled by the function h(t) = -16t square + 64, where t is the time in seconds since the ball was dropped. After how many seconds will the ball hit the ground?

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minzbamboop7rwwd minzbamboop7rwwd

27-04-2018

t has to be bigger than 0
the ball hit the ground so h(t) =0
-16t^(2) +64 = 0 -> 16t^2= 64 -> t^2 = 4 -> t = 2s

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