Question

Imagine a hollow tube of length 310 m and diameter 30 cm that is placed vertically next a tower . From the top of the tube you drop a marble. The air in the tube is stationary. If the ball is released exactly in the centre of the top end, will it land exactly in the centre of
the bottom end?

Answer 1

Close enough. I do not think that there is such a thing as "exact" in the world of experimental physics.