Free Fall

From J3 Physics

A link to a free fall visualization applet (note that you can "step" the time by tenths of a second):

http://physci.kennesaw.edu/physlets/freefall/freefall00.html

A nice video showing that free fall rate does not strongly depend on mass:

Some details on Galileo and free fall:

http://hsci.ou.edu/exhibits/exhibit.php?exbgrp=1&exbid=17&exbpg=3

Finally, a brief discussion of Galileo's contributions to science and their significance:

http://ircamera.as.arizona.edu/NatSci102/NatSci102/lectures/galileo.htm