"Getting Physical" with Second Life building and scripting

Dear Folks,
Do you know that you can "get physical" in Second Life with prims? There are a few settings you can use in Second Life where prims can exhibit real-world object behavior and gravity.
The next time you create an object in Second Life, click the "object" tab and then check the box called "physical." When you choose the "physical" attribute, it means that it is subject to the laws of gravity. After you create it, it will roll, bounce, and also fall through any other prim (if you create it over another object).
I decided to create an exhibit showing the mathematics of motion using an inclined ramp and rolling spheres. Galileo reportedly experimented with dropping objects from the Tower of Pisa to demonstrate that objects fall at the same speed, whatever their mass. He also used an inclined ramp, to slow the rate of descent of objects so that he could more accurately record his findings. He wanted to study gravity and how it affected the acceleration of objects. Through many experiments he discovered that as acceleration continues to make the rolling object move faster it continuous doubles its speed as it continues to roll.
From his many experiments he concluded that acceleration acts in a uniform fashion on a rolling/falling object and that the amount of distance covered is in relation to time squared. In other words, as an object is rolling it is continuously doubling in acceleration. One of the formulas he developed was
d ∝ t2 OR the total distance covered is proportional to the time squared.
I have constructed a simulation of Galileo's experiments in the Online@UCF area in Second Life. In one exhibit you can make spheres fall from the Tower of Pisa and there are also ramps so you could observe the mass of falling objects and acceleration. I also created a reflector telescope of the type that Galileo had used.
Here is the SLURL to visit the site:
Online@UCF (formerly UCF Course Development and Web Services):
http://slurl.com/secondlife/Arts%20and%20Letters/214/186/22/

I am still updating this exhibit, but you are welcome to visit the area and try it out. Fortunately, there is another useful attribute to assign to an object in Second Life, it is called "temporary." When an object is temporary, it is created and then disappears within about sixty seconds. This is fortunate, otherwise the area would soon become littered with rolling spheres !