Question 122394
a child at a swimming pool jumps off a 12 foot platform into the pool. the child's height in the feet above the water is modeled by 
h(t)=-16t to the power of 2 +12, where t is the time in seconds after the child jumps. how long will it take the child to reach the water? 
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The child's distance above the water when it hits the pool is zero.
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Let the height be zero and solve for "t".
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-16t^2+12 = 0
-4t^2+3 = 0
t^2 = 3/4
t = sqrt(3)/2 seconds or appoximately 0.8660 seconds
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Cheers,
Stan H.