document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=266424>Question 266424</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 90)  Foul ball.  Suppose Charlie O’Brian of the Braves hits a baseball straight upward at 150 ft/sec from a height of 5 ft.<BR>\n" );
document.write( "a)	 Use the formula to determine how long it takes the ball to return to the earth.  <BR>\n" );
document.write( "b)	Use the accompanying graph to estimate the maximum height reached by the ball.<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 #195737 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=195737\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Foul ball. Suppose Charlie O’Brian of the Braves hits a baseball straight upward at 150 ft/sec from a height of 5 ft.<BR>\n" );
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document.write( "Assume the formula is: h = -16t^2 + 150t + 5<BR>\n" );
document.write( ":<BR>\n" );
document.write( "a) Use the formula to determine how long it takes the ball to return to the earth.<BR>\n" );
document.write( "When the ball strikes the ground h = 0, therefore:<BR>\n" );
document.write( "-16t^2 + 150t + 5 = 0<BR>\n" );
document.write( "Use the quadratic formula to find the positive solution<BR>\n" );
document.write( "a=-16, b=150, c=5<BR>\n" );
document.write( "t = 9.4 sec is what I got<BR>\n" );
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document.write( "b) Use the accompanying graph to estimate the maximum height reached by the ball.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+graph%28+300%2C+200%2C+-6%2C+12%2C+-100%2C+400%2C+-16x%5E2%2B150x%2B5%29+ ALIGN=MIDDLE  ALT=\"+graph%28+300%2C+200%2C+-6%2C+12%2C+-100%2C+400%2C+-16x%5E2%2B150x%2B5%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "Looks like max height ~ 350 ft </SPAN>\n" );
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