document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=319604>Question 319604</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i throw a ball into the air in a movie theater.Ithrow it up with an initial velocity of 64 feet from a balcony 10 feet high .The ceiling of the theater is 58 feet high.When will the ball hit the ceiling<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #228878 by </B><A HREF=/tutors/aboutme.mpl?userid=Greenfinch><B>Greenfinch(383)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Greenfinch><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=Greenfinch><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=228878\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Distance S is 58 - 10 feet<BR>\n" );
document.write( "Acceleration is -32 feet/sec^2<BR>\n" );
document.write( "Initial velocity is 64 feet/sec (not feet as in the question)<BR>\n" );
document.write( "so using S = ut - (1/2)at^2 gives 48 = 64t - 16t^2<BR>\n" );
document.write( "divide by 16 to get t^2 - 4t + 3 = 0<BR>\n" );
document.write( "(t - 3)(t - 1)=0<BR>\n" );
document.write( "So t = 1 or 3<BR>\n" );
document.write( "It therefore hits at t = 1 second ( the other is the time it would hit if the ball were to pierce the ceiling without losing energy and then hit it again on the way down). </SPAN>\n" );
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