Question
Thu September 12, 2013 By:

to find the velocity

Expert Reply
Romal Bhansali
Fri September 13, 2013
u = 0, t = 4 s, g = 9.8 m/s2.
 
We know that,
Thus, the depth of well is
 
We also know that,
 
Thus, the velocity with which the stone hits the well surface is
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