<PRE><B>Question 528830</B>
A building is 862 feet tall. Use the function h(t) = 16t2 to approximate how long it would take an object to fall from the top. 

Round to the nearest tenth. 
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I assume you mean the time to hit the ground, h = 0
It falls 862 feet
16t^2 = 862
{{{t = sqrt(862/16)}}}
t =~ 7.3 seconds
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Usually the equation is written as
{{{h(t) = -16t^2 + 862}}}
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