document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=439434>Question 439434</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 1.	If a projectile is launched with an initial velocity of   feet per second from an initial height of   feet, then its height   in feet is determined by the quadratic function   where t is the time in seconds.  When you graph the function you will have the parabolic shape where the maximum point is called the vertex.   If a ball is tossed upward with velocity 64 feet per second from a height of 5 feet, the function to represent the height at any time t is given with the equation s(t)=-16t^2+64t+5 \r<BR>\n" );
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document.write( "a) In how many seconds will the ball reach the maximum height? (5 pts)\r<BR>\n" );
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document.write( "b)What is the maximum height in feet that the ball reaches? (5 pts) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #303689 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=303689\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) In how many seconds will the ball reach the maximum height? (5 pts)<BR>\n" );
document.write( "b)What is the maximum height in feet that the ball reaches? (5 pts) \r<BR>\n" );
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document.write( "s(t)=-16t^2+64t+5 <BR>\n" );
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document.write( "-16t^2+64t+5<BR>\n" );
document.write( "complete the square<BR>\n" );
document.write( "-16(t^2-4t+4)+5+64<BR>\n" );
document.write( "-16(t-2)^2+69<BR>\n" );
document.write( "coordinates of vertex(2,69)\r<BR>\n" );
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document.write( "ans:<BR>\n" );
document.write( "a) The ball will reach the maximum height in 2 seconds<BR>\n" );
document.write( "b) The ball will reach the maximum height of 69 ft<BR>\n" );
document.write( "see graph below:\r<BR>\n" );
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