A stone is dropped from the height of 121m and reaches to the earth in 10 sec with an acceleration of 20m/s square find the initial velocity of the stone

question:-A stone is dropped from the height of 121m and reaches to the earth in 10 sec with an acceleration of 20m/s square find the initial velocity of the stoneGiven :-Height = 121 mTime = 10 secAcceleration = 20 m/s²To Find :-Initial VelocitySolution :-

As we know that,

V = Final VelocityU = Initial VelocityA = AccelerationS = Distance

According to the question,

0² - u² = 2(20)(121)

0 - u² = 4840

-u² = 4840

-u = √4840

u = -69.5 m/s

-

The initial velocity of the stone is -69.5 m/S.

Biased means unfair but that's all ik