It takes 6 seconds for a stone to fall to the bottom of a mine shaft. How deep is the shaft? A) more that 200 meters B) about 60 meters C) about 120 meters D) about 180 meters.
http://wiki.answers.com/Q/It_takes_6_s_for_a_stone...

It would take
http://www.chacha.com/question/ifistakes6secon...

The simplified general formula is take the number of seconds, square that number and multiply the result by 16. The solution tells you the number of feet the object fell in Earth's
http://answers.yahoo.com/question/index?qid=200909...

D=1/2)a)t^2) so. 128m = (1/2)9.8m/s/s)t^2) solving for t we get 5.1seconds. if we take into account the speed of sound in air then it would be 5.5 seconds.
http://answers.yahoo.com/question/index?qid=200808...
