Question

a stone is dropped from roof of four storey building . of height of each storey is 5m . calculate the velocity with which it reaches the ground
pls full explanation​

Answer 1

Answer:

20 m/s

Explanation:

h = 5m×4

=20m

u = 0(because dropping from height)

g=10m/s^2

using third equation

v^2=u^2+2gh

v^2 = 0^2 + 2x20×10

v^2= 400

v=underroot of 400

v=20

hence, 20m/s

Answer 2

Answer :-

20m/s

Explanation :-

(in the attached picture)

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