1. How to get x,y positions for a tennis ball at each time t given total force exerted?2. We consider Drag force D, Lift Force L and Gravitation force W
D=1/2*(0.55+1/((22.5+4.2*(v/(w*R))^2.5)^0.4))*pi*R^2*d*v^2
L=1/2*(1/(2+(v/(w*R))))*pi*R^2*d*v^2
W=m*g
as described in...