Difference between revisions of "Ball and feather in air/vacuum"
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Revision as of 15:36, 6 June 2014
PIRA index: 1C20.10
Description
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.
Equipment
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Instructions
Keywords
ball, drop, feather, vacuum
Images & Movies
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