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Question on vertical
Question

A stone is dropped from a height of 90cm above the top of a window which is 160 cm high. The time taken by the stone to cross the window is

Easy
Solution

t1 = to come upto the window  =2×90980=37sec.
t2 = to come below the window =2×250980=57sec
t2t1=27 sec. time to cross the window.

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