2-9. The origin O of a moving coordinate system has a constant absolute velocity vo; whereas the point P has a constant absolute velocity Vp. If the moving system rotates

with a constant angular velocity w, and p is the position vector of P relative to O', find: \text { (a) } \dot{\rho} ;(\mathrm{b})(\dot{\rho})_{r} ;(\mathrm{c}) \ddot{\rho} ;(\mathrm{d})(\ddot{\rho})_{r} ;(\mathrm{e}) \frac{d}{d t}\left[(\dot{\rho})_{r}\right]