document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=65312>Question 65312</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Suppose a cannon shoots a cannon ball into the air so that the initial upward velocity of the cannon ball is 320 feet per second.Assume the cannon ball is shot from ground level.                              \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "H=-1/2*gt^+vt+h where g is the acceleration due to gravity, and on the earth, equals 32ft/sec^ (English units) or 9.8m/sec^(metric units,\r<BR>\n" );
document.write( "\n" );
document.write( "v is the initial upward velocity of the object<BR>\n" );
document.write( "h is the initial height above the ground\r<BR>\n" );
document.write( "\n" );
document.write( "the question:   <BR>\n" );
document.write( "             how high will the cannon ball be in 7 seconds?<BR>\n" );
document.write( "and how do you figure it out?\r<BR>\n" );
document.write( "\n" );
document.write( "i tried -16x^+320*7 because i thought this is what the solver was telling me to do...my answers were 2256,2224,2128,and 2352.  None of these appear to be correct.  I answered question #1 by guessing:  in 5 seconds, the rocket will be 1200 feet above ground.  The solution I came up with was 320*5=1600, 16*5=80,then add 320+80=400, then subtract 400 from 1600 to get 1200feet, which was the correct answer , but for question #2, i am wrong if i use the same pattern. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #45850 by </B><A HREF=/tutors/aboutme.mpl?userid=Earlsdon><B>Earlsdon(6294)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Earlsdon><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=45850\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The equation that relates the height (as a funtion of time) of an object propelled upwards at an initial velocity of Vo from an initial height of Ho is:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%28t%29+=+-16t%5E2%2BVot%2BHo ALIGN=MIDDLE  ALT=\"h%28t%29+=+-16t%5E2%2BVot%2BHo\"   DISABLED_style= \"max-width:90%; height:auto;\" > Note the <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=t%5E2 ALIGN=MIDDLE  ALT=\"t%5E2\"   DISABLED_style= \"max-width:90%; height:auto;\" > in the first term.  Substituting t = 7, you get:<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%287%29+=+-16%287%29%5E2%2B320%287%29%2B0 ALIGN=MIDDLE  ALT=\"h%287%29+=+-16%287%29%5E2%2B320%287%29%2B0\"   DISABLED_style= \"max-width:90%; height:auto;\" > Simplify.<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%287%29+=+-784%2B2240 ALIGN=MIDDLE  ALT=\"h%287%29+=+-784%2B2240\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=h%287%29+=+1456 ALIGN=MIDDLE  ALT=\"h%287%29+=+1456\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "The cannon ball will reach a height of 1,456 feet in 7 seconds. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );