SOLUTION: The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has

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Question 674557: The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?
Answer by Alan3354(69443) About Me  (Show Source):
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The velocity v (in feet per second) of an object dropped from tall building after falling d feet is given by the mathematical model v = . What is the velocity of an object that has fallen 121 feet?
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v = a*t where a is gravitational acceleration ~ 32 ft/sec/sec
s = at^2/2 (s = distance in ft)
t+=+sqrt%282s%2Fa%29
v+=+at+=+32sqrt%282s%2F32%29
v+=+32%2Asqrt%28121%2F16%29+=+32%2A11%2F4
v = 88 ft/sec