Question

A body falls freely from the top of a tower and falls through 55m during last second of fall.Find height of tower

Answer 1

use motion of kinematics formulae and eqn s= it+1/2 gtsq

Answer 2

OK
According to the motion of free fall of a body in the n the second of the fall to total distance fall through n seconds is as

Sn=(1/2)×g×(2n-1),S in n second=(1/2×g×n².Now taking the ratio of both is (2n-1)/n²=55m


solve u will get ans