Question

A ball falling from 30 meter height,when it reach the ground

Answer 1

As there is a Formula,


=> S = ut+1/2 gt^2

=> 30 = 0 + 1/2 x 9.8 x t^2

=> 30 = 4.9 x t^2

=> 30/4.9 = t^2

=> t^2 = 6.1

$= > t \: \: = \sqrt{6.1}$

$= > t \: \: = 2.4 \: \: s \:$



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