document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=384795>Question 384795</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A ball is thrown straight up into the air. The approximate height h of the ball after t seconds can be appromimately modeled by the function h=-16t^2+55t.What is the maximum height that the ball reaches?  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #272384 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=272384\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  A ball is thrown straight up into the air. The approximate height h of the ball after t seconds can be appromimately modeled by the function <BR>\n" );
document.write( "h(t) =-16t^2+55t. What is the maximum height that the ball reaches? <BR>\n" );
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document.write( "Max occurs when t = -b/(2a) = -55/(2*-16) = 55/32<BR>\n" );
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document.write( "Height at that time = h(55/32) = 47.27 ft.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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