SOLUTION: Thank you for your help on this one skydiving If a skydiver jumps from an airplane at a height of 8256 feet, then for the first five seconds her height above the earth is approxi

Algebra ->  Quadratic Equations and Parabolas -> SOLUTION: Thank you for your help on this one skydiving If a skydiver jumps from an airplane at a height of 8256 feet, then for the first five seconds her height above the earth is approxi      Log On


   



Question 151337: Thank you for your help on this one
skydiving If a skydiver jumps from an airplane at a height of 8256 feet, then for the first five seconds her height above the earth is approximated by the formula h=- 16t^2 + 8256. How many seconds does it take her to reach 8000 feet?
I am thinking 8000= -16t^2 + 8256 16t^2 =256 t^2=16 t=4
so it takes 4 seconds to fall 256 feet is this right? My husband says this can't be right because skydivers fall much faster than that. Thanks Dianne

Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
You are correct.
Cheers,
Stan H.