If a 20 kg object fell to the surgace of the Earth froma height of 30 m, what would its final velocity be? (work problem from the stanpoint of linear motion)

Question

If a 20 kg object fell to the surgace of the Earth froma  height of 30 m, what would its final velocity be? (work problem from the stanpoint of linear motion)

bobpursley · Answer

hf=hi+vi*t- 4.9t^2 hf, vi is zero, solve for t then vf=vi-9.8t