Quote:
Originally Posted by Keefelane66
An object dropped will travel 4.9m or 16 feet in one second so wishfully thinking the whole may be 160 feet deep.
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I think this is the formula and result
d = 1/2 * 9.8 * (10 seconds)^2
d = 1/2 * 9.8 * 100
d = 490 meter
490 meters is 1607.61 feets
Its been a long time since I used that so I could be mis-recalling.