Question

An object takes 5 seconds to reach the Ground from a height of 5m on a plane. what is the value of g on the planet?​

Answer 1

Here,

Time , t = 5 sec

Distance , s = 5m

Initial velocity , u = 0 m/s

Acc. to 2nd equation of motion

s = ut + 1/2at^2

5 = 0 × 5 + 0.5 ×a × 25

5 ×2 ÷ 25 = a

a = 2/5 m/s^2