There is drag force for the simulation at the above URL.
However, you can turn it off--- set b=0.0
You can drag the velocity vector to change it's magnitude and angle.
There is no control for mass since the trajectory is independent of mass.
You are weclomed to check out [url=http://www.phy.ntnu.edu.tw/ntnujava/index.php?topic=623.0]Projectile motion with equations[/url],too!