Ball and feather in air/vacuum
Révision datée du 6 juin 2014 à 19:07 par Administrator (discussion | contributions) (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.
