The following are a few projectile motion applets created at the June 26, 2011 GeoGebra workshop at ISTE 2011.
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Projectile Motion starting from above ground level

y= ax^2 + bx + c
where y= vertical distance in meters of the projectile at any time, c=starting height above ground(0), a= -1/2(9.8 m/s^2), and b = initial vertical velocity. The variable w = initial velocity X sin of theta and X axis is time in seconds.
This is a Java Applet created using GeoGebra from www.geogebra.org - it looks like you don't have Java installed, please go to www.java.com