document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1143733>Question 1143733</A>: <I><SPAN STYLE=\"word-break: break-all;\"> One piece of ash was ejected from a volcano with a initial velocity of 336ft/sec. The heigh H in feet is given by the equation H=-16t^2+336t where T is the time in seconds.<BR>\n" );
document.write( "When does the ash projectile reach its maximim height?<BR>\n" );
document.write( "What is its maximum height?<BR>\n" );
document.write( "when does the ash projectile return to the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #764619 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=764619\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> One piece of ash was ejected from a volcano with a initial velocity of 336ft/sec. The heigh H in feet is given by the equation H=-16t^2+336t where T is the time in seconds.<BR>\n" );
document.write( "When does the ash projectile reach its maximim height?<BR>\n" );
document.write( "It's the vertex of the parabola at t = -b/2a<BR>\n" );
document.write( "Solve for t<BR>\n" );
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document.write( "What is its maximum height?<BR>\n" );
document.write( "Sub t at the vertex.<BR>\n" );
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document.write( "when does the ash projectile return to the ground? <BR>\n" );
document.write( "When -16t^2 + 336t = 0<BR>\n" );
document.write( "Which is 2 times the t at the vertex.<BR>\n" );
document.write( " </SPAN>\n" );
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