Skeewer W.

asked • 04/12/18

An acorn is dropped from 144 feet. THe function h = -16t^2 + 144 gives the height of the acorn after t seconds. When does the acorn hit the ground?

i have one day pls help

Andy C.

The answer is 3 seconds.........
 
-16t^2 + 144 = 0
 
t^2 = -144/-16=9
 
t = 3 or t=-3 , negative time not allowed
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04/12/18

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