A ball is dropped from the roof of a building. It hits the ground and it is caught at its original height 5.0 s later.
a) What was the speed of the ball just before it hits the ground?
b) How tall was the building?You are watching from a window 2.5 m above the ground. The window opening is 1.2 m from the top to the bottom.
c) At what time after the ball was dropped did you first see the ball in the window?
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