document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1065243>Question 1065243</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using physics, it can be shown that if a ball is thrown upwards with an initial velocity<BR>\n" );
document.write( "of 16 ft/s from the top of a building 64 ft high, then its height h above the ground t<BR>\n" );
document.write( "seconds later will be<BR>\n" );
document.write( "h(t) = 64 + 16t &#8722; 16t2<BR>\n" );
document.write( "During what time interval will the ball be at least 32 ft above the ground? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #680361 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=680361\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> h(t) = 64 + 16t &#8722; 16t2<BR>\n" );
document.write( "During what time interval will the ball be at least 32 ft above the ground?<BR>\n" );
document.write( "----<BR>\n" );
document.write( "h(t) = 64 + 16t - 16t^2 = 32<BR>\n" );
document.write( "Solve for t<BR>\n" );
document.write( "You'll get 2 values, 1 ascending, 1 descending.<BR>\n" );
document.write( " </SPAN>\n" );
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