A flower pot from a roof top garden fall off the edge of the roof and fall fast the window below. Air resistance may be ignored. The flower pot takes 0.48s to travell between the top and the bottom of the window which is 1.9m high. How far below the roof is the top of the window?

Answer 1

As the ball falls, the distance fallen at time t is 4.9t^2
Now, we know that at some time t, it falls past the top of the window, and then .048 seconds later, it has fallen 1.9m more. So,
4.9t^2 + 1.9 = 4.9(t+0.48)^2
t = 0.1639
That is, it fell for 0.1639 seconds before passing the top of the window.
So, how far did the ball fall during the first 0.1639 seconds?