Question

A ball rolls off the top of a staircase with a horizontal velocity `u m//s`. If the steps are h meter high and b meter wide, the ball will hit the edge of the nth steps, if:
A. `n=(2hu)/(gb^(2))`
B. `n=(2hu^(2))/(gb)`
C. `n=(2hu^(2))/(gb^(2))`
D. `n=(hu^(2))/(gb^(2))`

Answer 1

Correct Answer - 3
`R==u sqrt((2H)/(g))impliesnb=u sqrt((2nh)/(g))`