document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=800851>Question 800851</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A scene from an adventure film calls for a stunt dummy to be dropped from above the second-story platform of the Eiffel Tower, a distance of 400 feet. Its height h(t) at time t is given by h(t)= -16t^2 + 400. Determine algebraically how long before the stunt dummy reaches the ground\r<BR>\n" );
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document.write( "I just need someone to tell me how to do it...not just give me the answer </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #483340 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=483340\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> height h(t) at time t is given by h(t)= -16t^2 + 400.\r<BR>\n" );
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document.write( "Height from which it is dropped = 400 ft\r<BR>\n" );
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document.write( "When it touches the ground h(t) =0\r<BR>\n" );
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document.write( "-16t^2+400=0\r<BR>\n" );
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document.write( "16t^2=400\r<BR>\n" );
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document.write( "t^2=25\r<BR>\n" );
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document.write( "t=5 seconds\r<BR>\n" );
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