document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=873018>Question 873018</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Can anyone help me?\r<BR>\n" );
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document.write( "An experimental rocket is launched into the air from ground level with the Earth with an initial velocity of 192 feet per second. Its height s in feet is given by the formula<BR>\n" );
document.write( "s=-16t^2+ 192t\r<BR>\n" );
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document.write( "After how many seconds will the rocket reach a height of 576 feet? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #526601 by </B><A HREF=/tutors/aboutme.mpl?userid=ewatrrr><B>ewatrrr(24785)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ewatrrr><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=ewatrrr><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=526601\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 576 = -16t^2 + 192t<BR>\n" );
document.write( "16t^2 - 192t + 576 = 0<BR>\n" );
document.write( "t^2 - 12t + 36 = 0<BR>\n" );
document.write( "(t-6)(t-6)=  0 , t = 6sec </SPAN>\n" );
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