http://weelookang.blogspot.com/2014/05/tracker-rachelong-student-video-tennis.html
physics of tennis ball drop in water
Kinematics Model
y = if ( t<0.29,(-2.137E0)*t^2-1.976E-1*t+2.310E-1,if(t<0.735,9.542E-1*(t)^2-9.368E-1*(t)+0.17,if(t<0.902,-9.661E-1*t^2+1.592E0*t-6.479E-1,if(t<1.169,6.172E-1*t^2-1.284E0*t+6.580E-1,0))))
author of video: rachelong
author of model: lookang
Author: author of video: rachelong, author of model: lookang
Contact: weelookang@gmail.com
More information at: http://weelookang.blogspot.com/2014/05/tracker-rachelong-student-video-tennis.html