A few years ago, it was fall and my dad was making my neighbor clean the leaves out of our gutters. My neighbor had to climb a distance of 30 feet to get on top of the roof. While he was up there, he accidentally slipped. He fell with a constant acceleration of 9.81 m/s ^2 due to gravity. And his speed was .5 meters per second for the whole two seconds it took him to reach the ground. He was very upset after he fell, but he was alright.