Question

Calculate the height from which a body is released from rest if its velocity just before hitting the ground is 30 meter per seconds?

Answer 1

the answer is

45m - height

Answer 2

Step-by-step explanation:

u = 0m/s

v = 30m/s

a = g = 10m/s²

s = H = ?

using the formula,

v² = u² + 2as

30² = 0² + 2(10)(H)

900 = 20H

H = 900/20

H = 45m