Ball and feather in air/vacuum
Revision as of 14:07, 6 June 2014 by Administrator (talk | contribs) (Created page with "A feather falls more slowly than a ball down a tube due to air resistance. When the tube is evacuated, both the feather and ball fall with equal speed.")
A feather falls more slowly than a ball down a tube due to air resistance. When the tube is evacuated, both the feather and ball fall with equal speed.
