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

Explanation

Here, `u=0,h=19.6m, v=?, g=9.8m//s^(2)`
from `v^(2)-u(2)=gh, v^(2)-0=2xx9.8xx19.6`
`v-sqrt(19.6xx19.6)=19.6m//s`