document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=551776>Question 551776</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object is fired upward from the top of a tower at the velocity of 80 feet per second. the tower is 200 feet high. the height of the object above the ground t seconds after firing is given by the formula h(t)=-16t^2 +80t+200.<BR>\n" );
document.write( "a) What is the maximum height reached by the object?<BR>\n" );
document.write( "b) How long after firing does it reach 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 #360833 by </B><A HREF=/tutors/aboutme.mpl?userid=lwsshak3><B>lwsshak3(11628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=lwsshak3><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=360833\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An object is fired upward from the top of a tower at the velocity of 80 feet per second. the tower is 200 feet high. the height of the object above the ground t seconds after firing is given by the formula h(t)=-16t^2 +80t+200.<BR>\n" );
document.write( "a) What is the maximum height reached by the object?<BR>\n" );
document.write( "b) How long after firing does it reach maximum height?<BR>\n" );
document.write( "**<BR>\n" );
document.write( "h(t)=-16t^2 +80t+200.<BR>\n" );
document.write( "complete the square<BR>\n" );
document.write( "h(t)=-16(t^2-5t+25/4)+200+100<BR>\n" );
document.write( "h(t)=-16(t-5/2)^2+300<BR>\n" );
document.write( "ans:<BR>\n" );
document.write( "maximum height reached by the object=300 ft<BR>\n" );
document.write( "How long after firing does it reach maximum height=2.5 sec </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );