A rock is dropped off the top of a building. On the way down, the rock passes a window. The window is known to be 2.00m tall and the stone takes 0.164 s to fall past the window.

1 What is the velocity of the rock at the top of the window?

(watchout !.. These are wrong answers don't write these values ) 11.39 m/s, 6.27 m/s 19.7 m/s 6.26 m/s

2 What is the velocity of the rock at the bottom of the window?

3 How much time was necessary from the instant the rock was dropped until it reached the top of the window?

4 How far above the top of the window was the rock dropped?