A stone is dropped vertically downwards from the top of a tower of height 45m with a speed of 20 ms\(^{-1}\). Find the : (a) time it takes to reach the grou...

A stone is dropped vertically downwards from the top of a tower of height 45m with a speed of 20 ms\(^{-1}\). Find the :

(a) time it takes to reach the ground ;

(b) speed with which it hits the ground. [Take \(g = 10 ms^{-2}\)].

Answer Details

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