The following simulation let you set up initial condition for projectile motion:
You can set initial x,y coordinate and initial velocity Vx,Vy

The default condition is x=0.0m, y=0.0m, vx=0.0m/s,vy=10m/s (upward).
You can change initial conditions by enter new values into text field.
Click init to set all value to initial conditions.
Click play button to start the simulation.
(If it is too fast, you can drag the rightmost slider down, to reduce the time step by factor between 0.1-1.0)n
The current status are shown at the top.
You can click step button to move time forward one at a time.
The right side show V-t plot.

This simulation is for students who just learn projectile motion.

DOWNLOAD ejs xml source
then click to translate strings for selected locale.

Press the Alt key and the left mouse button to drag the applet off the browser and onto the desktop.