A stone dropped from a building takes 4 s to reach the ground. The height of the building is

A ball is dropped from a building. It takes 4s to reach the ground. The height of the building is (use g = 10 m//s^(2) )

A stone is dropped from the roof of a building takes 4s to reach ground. The height of the building is

If the object dropped vertically from the top of the building takes 2 second to reach the ground then the height of the building is (g=10ms^(-2))

A stone is dropped from roof of building takes 5 s to reach the ground. The sound of striking is heard after 5.4 second after the stone is dropped. The velocity of sound is

A stone is dropped from roof of building takes 5 s to reach the ground. The sound of striking is heard after 5.4 second after the stone is dropped. The velocity of sound is