A ball rolls horizontally off the top of a stairway with a speed of 1.5 ms−1. The steps are 0.2 m high and 0.2 m wide. If the ball hits the edge of nth step first, then n is (Take g=10 m/s2)

A ball rolls horizontally off the top of a stairway with a speed of 1

1.	A ball rolls horizontally off the top of a stairway with a speed of 1.5 ms−1. The steps are 0.2 m high and 0.2 m wide. If the ball hits the edge of nth step first, then n is (Take g=10 m/s2)
Answer» A ball rolls horizontally off the top of a stairway with a speed of $1.5 {ms}^{- 1}$ . The steps are $0.2 m$ high and $0.2 m$ wide. If the ball hits the edge of $n^{t h}$ step first, then $n$ is (Take $g = 10 m / s^{2}$ )

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A ball rolls horizontally off the top of a stairway with a speed of 1.5 ms−1. The steps are 0.2 m high and 0.2 m wide. If the ball hits the edge of nth step first, then n is (Take g=10 m/s2)

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