The same shape, mass and of the same material.

Are the two objects interchangeable -- that is, can we swap A and B and get the same result?

A simple answer to your question is that atmosphere is not homogeneous. Dropping one object, say, over a hurricane downdraft and another over an updraft would result in different velocities relative to ground and so the one dropped from a higher altitude can reach the surface earlier.

Open thread, Feb. 06 - Feb. 12, 2017

by MrMind 1 min read6th Feb 2017115 comments


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