document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=287134>Question 287134</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a rock is dropped off of a bridge that is 30 feet above a river, how long will it take to hit the water? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #835241 by </B><A HREF=/tutors/aboutme.mpl?userid=qiuli><B>qiuli(1)</B></A><img src=\"/images/stars/iconNewId_16x16.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=qiuli><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=835241\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You can use the vertical motion model for this problem: f(x)=-16x^2+vx+s, f(x) being height, v being initial velocity and s being the starting height.\r<BR>\n" );
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document.write( "As there is no starting height, the problem can be stated as -16x^2+30.<BR>\n" );
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