A ball rolls off the top of a strairway horizontally with a velocity of 4.5 m s –1 . Each step is 0.2 m high and 0.3 m wide. If g is 10 m s –2 , then the ball strike the nth step where n is equal to –
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Verified by ExpertsThe correct answer is:
A
R = 
n w = 
n = 
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