Question

a body Falls freely under gravity from rest and reaches the ground in the time to write expression for the height Fallon by body

Answer 1

if a body falls from rest freely under gravity from a height h, u=0 and acceleration 'a' is replaced by 'g',

therefore,

h = 1/2 gt^2 ( from the second equation of motion)

also,

the first equation will be , v= gt and,

third, v^2 = 2gh