document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=473894>Question 473894</A>: <I><SPAN STYLE=\"word-break: break-all;\"> b.	Suppose a scientist on Earth throws a baseball upward. The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second. How long does it take for the ball to hit the ground (H=0)? (Use the quadratic formula to solve this problem, show all work). Write a statement to interpret your results.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #325187 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=325187\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Suppose a scientist on Earth throws a baseball upward.<BR>\n" );
document.write( " The scientist lets go of the ball 2 meters above the ground with an initial velocity of 10 meters per second.<BR>\n" );
document.write( " How long does it take for the ball to hit the ground (H=0)?<BR>\n" );
document.write( " (Use the quadratic formula to solve this problem, show all work).<BR>\n" );
document.write( " Write a statement to interpret your results. <BR>\n" );
document.write( ":<BR>\n" );
document.write( "h = -4.9x^2 + 10x + 2<BR>\n" );
document.write( "where<BR>\n" );
document.write( "h = height above ground<BR>\n" );
document.write( "-4.9x^2 = the downward force of gravity<BR>\n" );
document.write( "10x = upward velocity of the ball<BR>\n" );
document.write( "2 =  dist above ground when ball is thrown<BR>\n" );
document.write( ":<BR>\n" );
document.write( "-4.9x^2 + 10x + 2 = 0<BR>\n" );
document.write( "the quadratic formula<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-b+%2B-+sqrt%28+b%5E2-4%2Aa%2Ac+%29%29%2F%282%2Aa%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "a=-4.9, b=10, c=2<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x+=+%28-10+%2B-+sqrt%2810%5E2-4%2A-4.9%2A2+%29%29%2F%282%2A-4.9%29+ ALIGN=MIDDLE  ALT=\"x+=+%28-10+%2B-+sqrt%2810%5E2-4%2A-4.9%2A2+%29%29%2F%282%2A-4.9%29+\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "you can do the math here, you should get a positive solution of:<BR>\n" );
document.write( "x = 2.224 seconds </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );