Difference between revisions of "Ball and feather in air/vacuum"
		
		
		
		
		
		
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==Instructions==  | ==Instructions==  | ||
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==Keywords==  | ==Keywords==  | ||
Revision as of 09:18, 9 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
- ...
 - ...
 
Instructions
bla bla bla
Keywords
ball, drop, feather, vacuum