document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=88855>Question 88855</A>: <I><SPAN STYLE=\"word-break: break-all;\"> An object that is falling or vertically projected into the air has its height, in feet, above the ground given by s=-16t^2+vot=so Where s is the height, in fee, vo is the original velocity of the object in feet per second, t is the time the object is in motion, is seconds, and so is the height in feet, from which the object is dropped or projected. The figure shows that a ball is thrown straight up from a rooftop at an original velocity of 80 feet per second from a height of 96 feet. The ball misses the rooftop on its way down and eventually strikes the ground. Use the formula and the infromation to solve problem 89-91 I am solving even #90\r<BR>\n" );
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document.write( "s=-16t^2+80t+96\r<BR>\n" );
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document.write( "t=4\r<BR>\n" );
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document.write( "s= -16(4^2)+80(4)+96\r<BR>\n" );
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document.write( "s= -16(16)+320+96\r<BR>\n" );
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document.write( "s=-256+320+96\r<BR>\n" );
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document.write( "s= 160ft<BR>\n" );
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document.write( "CAN SOMEONE PLEASE HELP ME SOLVE THE SECOND PART OF THIS PROBLEM  USING THE EQUATION s=-16t^2+80t+96 How many seconds the ball will take to reach the ground?\r<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 #64551 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=64551\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> An object that is falling or vertically projected into the air has its height, in feet, above the ground given by s=-16t^2+vot=so Where s is the height, in fee, vo is the original velocity of the object in feet per second, t is the time the object is in motion, is seconds, and so is the height in feet, from which the object is dropped or projected. The figure shows that a ball is thrown straight up from a rooftop at an original velocity of 80 feet per second from a height of 96 feet. The ball misses the rooftop on its way down and eventually strikes the ground. Use the formula and the infromation to solve problem 89-91 I am solving even #90 <BR>\n" );
document.write( "s=-16t^2+80t+96 <BR>\n" );
document.write( "t=4 <BR>\n" );
document.write( "s= -16(4^2)+80(4)+96 <BR>\n" );
document.write( "s= -16(16)+320+96 <BR>\n" );
document.write( "s=-256+320+96 <BR>\n" );
document.write( "s= 160ft\r<BR>\n" );
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document.write( "CAN SOMEONE PLEASE HELP ME SOLVE THE SECOND PART OF THIS PROBLEM USING THE EQUATION s=-16t^2+80t+96 How many seconds the ball will take to reach the ground?<BR>\n" );
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document.write( "s = 0 when the ball hits the ground.<BR>\n" );
document.write( "-16t^2+90t+96 = 0<BR>\n" );
document.write( "-2(8t^2 - 45t - 48)=0<BR>\n" );
document.write( "(8t^2 - 45t - 48)=0<BR>\n" );
document.write( "t = [45 +-sqrt(45^2-4*8*-48)]/16<BR>\n" );
document.write( "t = [45 +- 59.67411]/16<BR>\n" );
document.write( "t = 6.54 seconds<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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