first drop video

Analysis of the video showed that the time of fall could be identified by looking at the audio signal. In this experiment it was 3.95 seconds. If the trash was fallung in a vacuum, this could be used to derive the height of the conduit.:
d = 1/2 * g * t^2 = 76 m.
I measured the distance between two adjacent floors as 2.58 meters. This makes the number of the floor from which the drop was done to be about 30. This is clearly not the case for the building I was using, which has a height of 18 floors (and the trash was dropped from the fifteenth floor), and therefore it took longer for the trash to fall than it would take if in a vacuum. I must repeat this experiment to confirm this result. If I receive similar results, conclusions about the nature of the fall in the trash conduit could be made.