new repurposed name
Ejs Open Source Multi Objects ( Car , Ball , Shell , Disc ) rolling down on an Inclined Plane Java Applet
i must thanks the man, Fu-Kwun Hwang for his worthy of noble prize forum for informal learning cum community of practice CoP.

Ejs Open Source Rocket Car on an Inclined Plane Java Applet is by Wolfgang Christian, Francisco Esquembre, and Mario Belloni using the Easy Java Simulations (Ejs) modeling tool, now remixed by lookang for learning purposes.
Information about Ejs is available at:
and also from the OSP Collection on the ComPADRE Web site:
Access Rights:
   Free access
   This material is released under the GNU General Public License Version 1.

My thoughts:
so after i am done remixing it, i will also release it's remixed it's source code back, there by guarantee your freedom to share and change free software--to make sure the software is "free to change" for all its users.