A ball is droped out of a window of a tall building. If it hists the ground 3.5s later, how high aboe the ground is the window?

Answer 1

the distance in metres is 4.9t^2 (from physics), where t is seconds and d is metres.
so the distance is 4.9(3.5)^2 or appr. 60 metres

Answer 2

h=1/2 g t^2