A ball rolls off top of a stair way with a horizontal velocity 
. If the steps are h metres
high and b metres wide. the ball will just hit the edge of 
th step if n equals to
A
B
C
D
Text Solution
Verified by ExpertsThe correct answer is:
C
If the ball hits the 
th step, the horizontal and vertical distances traversed are nb and nh
respectively. Let 
be the time taken by the ball for these horizontal and vertical displacement. Then velocity along horizontal direction remains constant 
, initial vertical velocity is zero
… (i)
… (ii)
From Eqs. (i) and (ii), we get by eliminating t,
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