Tracker: wangyuxing student video basketball motion

Tracker: wangyuxing student video basketball motion

http://weelookang.blogspot.sg/2014/05/tracker-wangyuxing-student-video.html
physics of basket ball model
vx = -5.301
vy = 6.701
Fx = 0
Fy = -5.292*2 = -10.58
https://www.dropbox.com/s/a6lsc4cwjw7rqyc/wangyuxing_312_28_trackermodel.trz
author of video: wangyuxing
author of model: lookang

http://weelookang.blogspot.sg/2014/05/tracker-wangyuxing-student-video.html
physics of basket ball model
vx = -5.301
vy = 6.701
Fx = 0
Fy = -5.292*2 = -10.58
https://www.dropbox.com/s/a6lsc4cwjw7rqyc/wangyuxing_312_28_trackermodel.trz
author of video: wangyuxing
author of model: lookang

Current Analysis:

1. It looks like the camera is not recording images at regular intervals. I think that many phones and maybe even tablets do this when they can't keep up a steady frame rate. I would try a different camera.

   

   by douglas brown found here 

2. compression has a kind of rounding off error to create a sharp image of the basketballcompression has a kind of rounding off error to create a sharp image of the basketball.
3. unlikely tracker software has a bug in the calculation of vx.