Question

A body is dropped from a height of 125 m and
takes some time to reach the ground. (g = 10
m/sec)
What will be time taken by the body to reach
ground?​

Answer 1

u=0m/s

s=125m

g=10m/s^2

using s=ut+1/2at^2

125=0×t+1/2×10t^2

or, 125=5t^2

or, 125÷5= t^2

or, t×t = 25

or, t=5

answer: time taken will be 5 sec