document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=150243>Question 150243</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/0072538953/algebrahomeworkh>Elementary and Intermediate Algebra</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> Suppose Charlie O&#8217;Brian hits a baseball straight upward at 150ft/sec from a height of 5 feet.<BR>\n" );
document.write( "a)	Use the formula to determine how long it takes the ball to return to Earth<BR>\n" );
document.write( "b)	Use the graph on the next page to estimate the maximum height reached by the ball<BR>\n" );
document.write( "I have no idea how to set up the equation for the answer........ </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #110260 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=110260\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a general trajectory related formula for baseballs, golf balls, artillery shells, etc.<BR>\n" );
document.write( "__ is h=-16t^2+(Vo)t+Ho __ h is the height at time (t), Vo is the initial upward (vertical) velocity<BR>\n" );
document.write( "__ and Ho is the initial height\r<BR>\n" );
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document.write( "for part a), you need to find the time (t) when h=0 (return to Earth)\r<BR>\n" );
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document.write( "0=-16t^2+150t+5 __ use the quadratic formula to find t<BR>\n" );
document.write( "__ HINT __ the positive value is the one you want\r<BR>\n" );
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document.write( "other HINT __ max height is approx 357' </SPAN>\n" );
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