document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=981613>Question 981613</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A rocket is launched straight up from the ground with an initial velocity of 224 feet per second. <BR>\n" );
document.write( "a)  At what time does the rocket reach its maximum height? <BR>\n" );
document.write( "b)Find the maximum height of the rocket<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #602579 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=602579\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A rocket is launched straight up from the ground with an initial velocity of 224 feet per second. <BR>\n" );
document.write( "a)  At what time does the rocket reach its maximum height? <BR>\n" );
document.write( "b)Find the maximum height of the rocket<BR>\n" );
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document.write( "That's not a rocket.<BR>\n" );
document.write( "You ever seen a rocket launched?  They have thrust engines, and the max height of some are out around Pluto and beyond.<BR>\n" );
document.write( "That's a projectile.<BR>\n" );
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document.write( "Usually when the height is feet, the equation is h(t) = -16t^2 + 224t<BR>\n" );
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document.write( "h(t) = -16t^2 + 224t<BR>\n" );
document.write( "The max ht is the vertex of the parabola, at t = -b/2a<BR>\n" );
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