document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=352293>Question 352293</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object is thrown straight up from the top of a 40 foot building at an initial rate of 72 feet per second.<BR>\n" );
document.write( "a) Write the position function indicated.<BR>\n" );
document.write( "b) Find the objects maximum height.<BR>\n" );
document.write( "c) When does the object hit the ground? Hint: s(t)=0<BR>\n" );
document.write( "d) When is it 80 feet above the ground? Hint: s(t)=80<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #251799 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=251799\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a) s(t) = -16t^2 + 72t + 40 ___ gravitational acceleration(t^2) + initial velocity(t) + initial height\r<BR>\n" );
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document.write( "b) the graph of the function s(t) is a parabola , with the max height at the vertex (on the axis of symmetry)<BR>\n" );
document.write( "___ the general equation for the axis of symmetry (using ax^2+bx+c) is ___ x = -b/(2a)<BR>\n" );
document.write( "___ find t using the axis of symmetry , and substitute to solve for s\r<BR>\n" );
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document.write( "c) using the equation from (a) , find t when s equals 0 ___ the negative solution is extraneous\r<BR>\n" );
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document.write( "d) using the equation from (a) , find t when s equals 80 </SPAN>\n" );
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