[quote author=ahmedelshfie link=topic=1390.msg5247#msg5247 date=1262606949]
Hello prof i find word file i send you as jpg for you see graphics of velocity with time (V)(T)
thanks so much
Ahmed
[/quote]

You should move
[code]
if (y< 0) _pause();
[/code]
to [b]Fixed relations[/b] tab.

You do not need \frac{dv}{dt}=g*t-vy.
\frac{dvy}{dt}=-g will calculate vy(t)=vy(t=0)-gt for you


I have modified your ejs xml source.
Please check out the attached file.