Question

a stone is dropped in a river from a bridge if it takes 4 second to reach the surface of water calculate the depth of the water label from the breeze calculate the velocity with which the stone streaks on the water surface​

Answer 1

Answer:

When particle is dropped from bridge the initial velocity u is zero.

Let the height of bridge from water level is h then the displacement traveled by particle is h.

Acceleration is g downward.

Then applying equation of motion:

s=ut1/2at²

where a=g and u=0

then, h=1/2g(4)²