Question

An object is dropped from a height of 25 meters at what velocity will it hot the ground​

Answer 1

Given data

height (h) = 25 m ,

velocity (v) = ?

we know that,

v²-u² = 2as

initial velocity (u) = 0,

a = g = 9.8 m/s ,

Now the equation becomes,

v² = 2 × g × h

= 2 × 9.8 × 25

v² = 490.5

v = √490.5

v = 22.1 m/s

Therefore answer is C , i.e., 22 m/s