Question

A stone is released from the top of tower of height 19.6 m. Calculate the final velocity just before touching the ground.

Answer 1

h = 19.6 

u = 0 

a = + g = 9.8 m/s² 

v² = 2gh 

v = \(\sqrt{ 2gh} = \sqrt{2\,\times\,9.8\,\times\,19.6} = 19.6 \,m/s\)