document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1111364>Question 1111364</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A man is standing on a cliff above a beach. He throws a rock upward at a speed of 70 feet per second from a height 100 feet above the beach. How long will it take until the rock lands on the&#8203; beach? Use formula h(t)= -16^2+v0t+s to solve </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #726350 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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/cgi-bin/show-face.mpl?user=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=726350\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A man is standing on a cliff above a beach. He throws a rock upward at a speed of 70 feet per second from a height 100 feet above the beach. How long will it take until the rock lands on the beach?<BR>\n" );
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document.write( "h(t) = -16t^2 + 70t + 100<BR>\n" );
document.write( "At impact, h(t) = 0<BR>\n" );
document.write( "-16t^2 + 70t + 100 = 0<BR>\n" );
document.write( "Solve for t, ignore the negative solution.\r<BR>\n" );
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