A stone is dropped from the top of the tower. Its speed after it has fallen 20 m is (Take g = 10 ms -2 )

Question

Philoid · Accepted Answer

Here,

u = Initial velocity = 0

v = Final velocity

s = Distance travelled = 20 m

a = acceleration = g = 10 ms^-2

Now, we know from the equations of motion that,

ms^-1

v = 20 ms^-1

Hence, option D is correct.