[b][color=red][font=Verdana]source code
download the *.jar for using the applet on standalone without internet connection.[/font][/color][/b]

some known bugs,

text field fail to load in jar

some good features to have

now need to key in velocity u and angle of launch alpha and once initialize, the applet remembers the values making it easier to explore and use the applet. bad thing is now the starting is 0 or blank or empty, so newbies will be wondering what is wrong.

in 23 added event handlers to put the simulation back to when instant y = yground

replaced all text field into label since the EJS 4.1 Jan 2009 version does not support display of text field

redesigned with slider now instead of input field for better usability