document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=327415>Question 327415</A>: <I><SPAN STYLE=\"word-break: break-all;\"> \"A projectile is thrown upward so that its distance, in feet, above the ground after t seconds is  h(t)= -14t^2 + 336t. What is its maximum height?\" </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #234524 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=234524\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  h(t)= -14t^2 + 336t. What is its maximum height?\"<BR>\n" );
document.write( "It's a parabola, so the max height is the vertex, at<BR>\n" );
document.write( "t = -b/2a<BR>\n" );
document.write( "t = -336/-28 = 12 seconds<BR>\n" );
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document.write( "h(12) = -14*144 + 336*12<BR>\n" );
document.write( "= 2016 feet<BR>\n" );
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document.write( "This would be on some other planet, where gravity is 14 ft/sec/sec, btw.<BR>\n" );
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