Question

Calculate the height from which a body is released from rest if it's velocity is 30 meter per seconds

Answer 1

Answer:

The height from which the body is released from rest is 45m.

Explanation:

Given,

u = 0 m/s

v = 30 m/s

g = 10 m/s²

From 3rd equation of motion,

2gh = v² - u²

h = (v² - u²)/2g

= (30² - 0²)/2×10

= 900/20

= 90/2

= 45m

∴ The height from which the body is released from rest is 45m.

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