Question

A stone dropped from a building top take s 4 sec to reach the ground the height of the building is

Answer 1

h=g*t
here, h=?
g=9.8m/s^2
t=4sec

h=(9.8*4)m.
h=39.2m.

Answer 2

Hello friend....!!!

According to the question it is given that,

Time taken by the stone to reach the ground,

t = 4 seconds

H = ?????

According to the equations of motion, we know that

H = ut + 1/2gt^2

H = 0(4) +1/2 (9.8)(4)(4)

H = 78.4 m

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Hope it helps...!!!