Question

A ball takes 3 seconds to strike the ground, when drops from the roof of a
building, if the acceleration due to gravity is 10 m/s2 towards the earth, then the
height of the building is​

Answer 1

Answer:

If a ball take 3 second to strike

We have to find height

Easy

The accelartion of gravity is 9.8 constant

But we have to take 10 m/s

Then the height of the building is 30 m

Time taken *accelartion =3*10=20