[quote author=ahmedelshfie link=topic=1390.msg5247#msg5247 date=1262606949]<br />Hello prof i find word file i send you as jpg for you see graphics of velocity with time (V)(T)<br />thanks so much <br />Ahmed<br />[/quote]<br /><br />You should move <br />[code]<br />if (y< 0) _pause();<br />[/code]<br />to [b]Fixed relations[/b] tab.<br /><br />You do not need <img class='tex' src="/demolab/smf/teximages/8/a/3/8a343fb2673709c6e52d6f0c8d732df3.png" alt="\frac{dv}{dt}=g*t-vy" />. <br /><img class='tex' src="/demolab/smf/teximages/5/b/c/5bcc04078c1e95b58eb6de4e464cd5a6.png" alt="\frac{dvy}{dt}=-g" /> will calculate <img class='tex' src="/demolab/smf/teximages/3/9/e/39ead9e9e1269519254619267d1c6291.png" alt="vy(t)=vy(t=0)-gt" /> for you<br /><br /><br />I have modified your ejs xml source.<br />Please check out the attached file.