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Physics 21 Online
OpenStudy (anonymous):

A feather will fall through the air more slowly than a brick because of _____. Answer gravity air resistance terminal velocity momentum

OpenStudy (jamesj):

On the moon they drop at the same speed precisely: http://www.youtube.com/watch?v=5C5_dOEyAfk So what's different on the moon? No air and hence no air resistance.

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