Here is the free fall java applet that I have remixed for the students.
The original source code is written by Andrew Duffy and can be found in
[url=http://www.opensourcephysics.org/document/ServeFile.cfm?ID=10001&DocID=1639] http://www.opensourcephysics.org/document/ServeFile.cfm?ID=10001&DocID=1639[/url]

Here are the changes that I have made :
(1) Remove the graphs
(2) Do have 3 free fall diagrams.
(3) Add in the "arrow" for the weight.



Feel free to comment!

translate strings in simulation to different language format before download
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Download EJS jar file(1580.3kB):double click downloaded file to run it. (11 times by 6 users) , Download EJS source (1 times by 1 users) View EJS source