document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=347093>Question 347093</A>: <I><SPAN STYLE=\"word-break: break-all;\"> (this is a word problem involving quadratic equation)\r<BR>\n" );
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document.write( "an object is projected directly upward from the ground. after t seconds its distance in feet above the ground is s=144t-16r^2 after how many sec. will the object be 128 feet above the ground? (please explain how u got the answer and use the factoring method) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #248174 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=248174\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> an object is projected directly upward from the ground. after t seconds its distance in feet above the ground is s=144t-16r^2 after how many sec. will the object be 128 feet above the ground?<BR>\n" );
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document.write( "When the object is on the ground, s=zero.<BR>\n" );
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document.write( "Solve: -16t^2+144t = 0<BR>\n" );
document.write( "-16t(t-9) = 0<BR>\n" );
document.write( "t = 0 seconds or t = 9 seconds<BR>\n" );
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document.write( "That means the object was on the ground with <BR>\n" );
document.write( "time started and is back on the ground after<BR>\n" );
document.write( "9 seconds.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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