document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=890055>Question 890055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i don't really know which category this goes under but here goes nothing...\r<BR>\n" );
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document.write( "an object that is projected straight downward with initial velocity v feet per second travels a distance s=vt+16t^2, where t=time in seconds. If Ramon is standing on a balcony 84 ft above the ground and throws a penny straight down with an initial velocity of 10 feet per second, in how many seconds will it reach the ground<BR>\n" );
document.write( "a. 2 seconds<BR>\n" );
document.write( "b 3 seconds<BR>\n" );
document.write( "c 6 seconds<BR>\n" );
document.write( "d 8 seconds </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #538653 by </B><A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><B>ankor@dixie-net.com(22740)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=ankor@dixie-net.com><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=ankor@dixie-net.com><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=538653\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> an object that is projected straight downward with initial velocity v feet per second travels a distance s=vt+16t^2, where t=time in seconds.<BR>\n" );
document.write( " If Ramon is standing on a balcony 84 ft above the ground and throws a penny straight down with an initial velocity of 10 feet per second, in how many seconds will it reach the ground<BR>\n" );
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document.write( "s = 84 ft, v = 10 ft/sec<BR>\n" );
document.write( "Rewrite the equation to<BR>\n" );
document.write( "16t^2 + 10t = 84<BR>\n" );
document.write( "16t^2 + 10t - 84 = 0<BR>\n" );
document.write( "simplify divide by 2<BR>\n" );
document.write( "8t^2 + 5t = 42<BR>\n" );
document.write( "You can use the quadratic formula to find t, but this will factor to<BR>\n" );
document.write( "(8t+21)(t-2) = 0<BR>\n" );
document.write( "the positive solution is all we want here<BR>\n" );
document.write( "t = 2 seconds<BR>\n" );
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document.write( "Check this in the original equation<BR>\n" );
document.write( "s = vt + 16t^2<BR>\n" );
document.write( "v=10, t=2<BR>\n" );
document.write( "s = 10(2) + 16(2^2)<BR>\n" );
document.write( "s = 20 + 64<BR>\n" );
document.write( "s = 84 ft </SPAN>\n" );
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