Question 552177
 Please help find the hang time for a golfball hit 80 feet into the air.
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Neglecting air friction,
{{{s = at^2/2 = 16t^2 = 80}}}
{{{t = sqrt(5)}}} seconds
t =~ 2.236 seconds ascending, + 2.236 seconds descending, if "hang time" means the total.
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