document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=256216>Question 256216</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Velocity problem help!<BR>\n" );
document.write( "A rocket is fired upward at an initial velocity of 1008 ft/s from a tower that is 120 ft height. When will the rocket reach a height of 3896 ft above ground level?\r<BR>\n" );
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document.write( "H=vt-16t^2.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #188378 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=188378\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A general formula for height is<BR>\n" );
document.write( "(i) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29+=+-gt%5E2+%2B+V0t+%2B+S0 ALIGN=MIDDLE  ALT=\"h%28t%29+=+-gt%5E2+%2B+V0t+%2B+S0\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "using given information, we get<BR>\n" );
document.write( "(ii) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3896+=+-32t%5E2+%2B+1008t+%2B+120 ALIGN=MIDDLE  ALT=\"3896+=+-32t%5E2+%2B+1008t+%2B+120\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "setting (ii) = 0, we get<BR>\n" );
document.write( "(iii) <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=0+=+32t%5E2+-+1008t+%2B+3776 ALIGN=MIDDLE  ALT=\"0+=+32t%5E2+-+1008t+%2B+3776\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Solving for t using the quadratic, we get<BR>\n" );
document.write( "t ~ 4.346 seconds<BR>\n" );
document.write( "or<BR>\n" );
document.write( "t ~ 27.154 seconds </SPAN>\n" );
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