Homework Help: algebra

Posted by Anonymous on Wednesday, June 13, 2012 at 9:48am.

If a pine cone is projected upward at a velocity of 16ft/sec from the top of a 96-foot pine tree, then how long does it take to reach the earth?

algebra - Steve, Wednesday, June 13, 2012 at 11:13am
assuming it does not get caught in the branches on the way down,

96 + 16t - 16t^2 = 0
t = 3 seconds

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