Most of you know that any two objects dropped in a vacuum will fall at the same rate. Some of you have probably even seen it demonstrated in person. But you’ve never seen this classic experiment ...
A 6-feet long Plexiglas tube containing a "coin" and "feather" is evacuated. The "coin" and "feather" fall at the same rate. When air is introduced into the tube, the "feather" falls at a slower rate.
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