delve
Dec15-09, 05:17 PM
The following is the equation for the drag:-\frac{1}{2}c_{w}{\rho}Av^2. I'm wondering how I can get the following parametric equation for the drag:\ddot{x}=-b\dot{x}\sqrt{\dot{x}^{2}+\dot{y}^{2}. By the way, b=\frac{{c_w}{\rho}A}{2m}. Thank you.