The lower graph, which shows vertical height versus time, is a nice parabolic arc. The upper graph should be nearly flat but it's not because your track moves from left to right (as seen in the photo), most likely because the camera was a little tilted or due to perspective (look at the door frame behind you).
The lower graph, which shows vertical height versus time, is a nice parabolic arc. The upper graph should be nearly flat but it's not because your track moves from left to right (as seen in the photo), most likely because the camera was a little tilted or due to perspective (look at the door frame behind you).
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