Question

A stone is thrown vertically downward with a velocity of 5 m/s from top of tower of height 30 m What will be velocity of the stone while hitting the ground?
(Take g=10m/s2)
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Answer 1

Answer:

25m/s

Explanation:

u = 5m/s

s = 30 m

g = 10m/s

v = ??

according to 3rd equation,

2as = v^2- u^2

2(10)(30)=v^2 - (5)^2

600 = v^2 - 25

on solving we get 25m/s