# Why would you throw like that?

Standing on a building $$80\text{m}$$ high, I threw a stone vertically upwards at a velocity of $$20\text{m/s}$$. Then find the time(in seconds) it takes to reach the ground.

Details and assumption:-

• Take $$\text{g}$$(acceleration due to gravity) as $$10{\text{m/s}}^2$$.