SOLUTION: HELP!!!!!!!! I don't get this problem at ALL!!! If it takes a ball 8 seconds to hit the ground, from what height did it fall?

Algebra ->  Algebra  -> Quadratic Equations and Parabolas  -> Quadratic Equations Lessons -> SOLUTION: HELP!!!!!!!! I don't get this problem at ALL!!! If it takes a ball 8 seconds to hit the ground, from what height did it fall?      Log On

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Question 298131: HELP!!!!!!!!
I don't get this problem at ALL!!!
If it takes a ball 8 seconds to hit the ground, from what height did it fall?
Found 2 solutions by richwmiller, unlockmath:
Answer by richwmiller(9143) About Me  (Show Source):
You can put this solution on YOUR website!
The problem assumes that you know the formula for falling objects.
313.6 meters
http://www.grc.nasa.gov/WWW/K-12/airplane/mofall.html

Answer by unlockmath(1603) About Me  (Show Source):
You can put this solution on YOUR website!
Hello,
The equation we need to use is:
Distance=7t^2 Plug in 8 for t and we get:
Distance=7(64) Multiplied out to get:
D = 448 feet
RJ
www.math-unlock.com