document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=615951>Question 615951</A>: <I><SPAN STYLE=\"word-break: break-all;\"> If a bullet is shot straight up with an initial velocity of 48 feet per second, its height s after t seconds is given by the equation s=48t-16t^2 Find the time it takes for the bullet to return to Earth. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #387397 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=387397\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> If a bullet is shot straight up with an initial velocity of 48 feet per second, its height s after t seconds is given by the equation s=48t-16t^2 Find the time it takes for the bullet to return to Earth.<BR>\n" );
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document.write( "When the bullet hits the earth it's height is 0.<BR>\n" );
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document.write( "Solve -16t^2 + 48t = 0<BR>\n" );
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document.write( "Factor:<BR>\n" );
document.write( "-16t(t - 3) = 0<BR>\n" );
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document.write( "Positive solution:<BR>\n" );
document.write( "t = 3 seconds<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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