document.write( "Question 275417: A rock falls from a tower that is 304 feet high. As it is falling, its height is given by the formula h=304-16t^2. How many seconds(in tenths) will it take for the rock to hit the ground (h=0)? (I believe you just set H=0 and then solve? Is that correct?) \n" ); document.write( "
Algebra.Com's Answer #200900 by Alan3354(69443)\"\" \"About 
You can put this solution on YOUR website!
h=304-16t^2 = 0
\n" ); document.write( "16t^2 = 304
\n" ); document.write( "t^2 = 19
\n" ); document.write( "t =~4.36 seconds
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