A ball dropped from the 9th story of a multi- stored building reaches the ground in 3s. In the first second of its free fall, it passes through 𝑛 stories, where 𝑛 is equal to (Take g = 10ms−2 )

A ball dropped from the 9th story of a multi- stored building reaches the ground in 3s. In the first second of its free fall, it passes through 𝑛 stories, where 𝑛 is equal to (Take g = 10ms−2 )

Question : A ball dropped from the 9th story of a multi- stored building reaches the ground in 3s. In the first second of its free fall, it passes through 𝑛 stories, where 𝑛 is equal to (Take g = 10ms−2 )