Questions
A ball rolls off the top of a stair case with a horizontal velocity of 4.5 ms-1. If the steps are 0.2 metre high and 0.3 metre broad and g = 10 ms-2, then the ball will strike the nth step where n is equal to (g=10 m/s2)
detailed solution
Correct option is C
Total height of fall = nh and range = nb.nb=U2nhg n=U22hg⋅b2=9Talk to our academic expert!
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