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As always, we're going to ignore air resistance, and treat the question purely with
the math of free fall under the influence of gravity near the earth's surface.
The general equation for the free fall distance in time 'T' is: D=1/2 G T2 .
In this case, D=1 inch or 1/12th foot. 'G' is the acceleration of gravity = 32.2 ft/sec2 .
1/12 = 1/2 (32.2) T2
T2 = 1/(6 x 32.2) = 1/193.2
T = 71.9 milliseconds (rounded)
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