A body falling freely under gravity passes P and Q, 30 m apart in 1s Find from what point - Physics -

Question

A body falling freely under gravity passes P and Q, 30 m apart
in 1s Find from what point (height) above the upper point P it
began to fall?(g=10m/s)

Neha Gupta · Accepted Answer

Let v be the velocity of the particle at point p
time taken to cover the distance 30 m is 1 second
s = 30 mt = 1 ss = vt +12at230 = v + 5v = 25 m/slet x is the distance above point plet t' is the time taken by particle to cover the distance xu is the initial velocity = 0v = u + at'25 = 0 +10t't' = 2
5 sx = ut+12gt'2x = 0 + 0
5×10×6 52x = 31 25 m

A body falling freely under gravity passes P and Q, 30 m apart in 1s. Find from what point (height) above the upper point P it began to fall?(g=10m/s)