A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of........$s$
A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of........$s$
$3$
$5$
$7$
$9$
A body falls freely from rest. It covers as much distance in the last second of its motion as covered in the first three seconds. The body has fallen for a time of........$s$
$\frac{1}{2}g{(3)^2} = \frac{g}{2}(2n - 1) \Rightarrow n = 5\;s$
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