document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890125>Question 890125</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A projectile that is fired vertically into the air with an initial velocity of 120 ft per second can be modeled by the equation s=120t-16t2. In the equation, s is the distance in feet of the projectile above the ground after t seconds. Is it possible for the projectie to reach 900 feet? Justify you answer. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #538733 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=538733\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A projectile that is fired vertically into the air with an initial velocity of 120 ft per second can be modeled by the equation s=120t-16t2. In the equation, s is the distance in feet of the projectile above the ground after t seconds. Is it possible for the projectie to reach 900 feet? Justify you answer.<BR>\n" );
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document.write( "See if there is a Real Number solution for:::<BR>\n" );
document.write( "-16t^2 + 120t = 900<BR>\n" );
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document.write( "b^2-4ac = 120^2-4*-16*-900 is less than zero<BR>\n" );
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document.write( "So t is a complex number.<BR>\n" );
document.write( "So the projectile never reaches 900 ft.<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
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