document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=288957>Question 288957</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An arrow is shot directly upward from the top of a 112-foot tall building with an initial velocity of 96 feet per second. The height of the arrow above the ground after (t) seconds is given by the position function. s(t)=-16t^2+96t+112. After how many seconds will the arrow strike 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 #209372 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=209372\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An arrow is shot directly upward from the top of a 112-foot tall building with an initial velocity of 96 feet per second. The height of the arrow above the ground after (t) seconds is given by the position function. <BR>\n" );
document.write( "s(t)=-16t^2+96t+112. After how many seconds will the arrow strike the ground?<BR>\n" );
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document.write( "Solve -16t^2 + 96t + 112 = 0<BR>\n" );
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document.write( "-16(t^2 - 6t + 7) = 0<BR>\n" );
document.write( "Factor:<BR>\n" );
document.write( "(t-6)(t+1) = 0<BR>\n" );
document.write( "Positive solution:<BR>\n" );
document.write( "t = 6 seconds<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. <BR>\n" );
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