Question

18. A stone is dropped from the roof of a five storey building. The height of each storey is
2m
4m. Calculate the velocity with which the stone will hit the ground. (g=10m/s)
and weight of an object.
2m​ in physics this sum is from​

Answer 1

Answer:

20m/s is the velocity it will hit the ground

Explanation:

u= 0                      (Since its a free fall)

g= 10 m/s              (You can use a also in place of g)

Height of each storey= 4m

Height of a five storey building= 5×4        (We use s for height)

                                                   = 20m

v²-u²=2gs

v²-0²=2×10×20

v²=400

v=√400

 =20m/s