First slide
Release from certain height
Question

A stone dropped from the top of a tower travels 59 of the  height of tower during the last second of fall. Height of the tower is: (take g = 10 m/s2)

Easy
Solution

Let T =time of flight and H -height of tower, then H=12gT2 and 
H-59H=12gT-12T=3s
So, height of the tower = 12(10)(3)2= 45m

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