Car Question !!! Two Jeeps P and B race along straight lines, across flat terrain, and past stationary border guard A. Relative to the guard, B travels at a constant speed of 20.0 m/s at the angle theta=30.0*. Relative to the guard, P has accelerated from rest at a constant rate of 0.400 m/s^2 at the angle theta2=60.0*. At a certain time during the acceleration, P has a speed of 40.0 m/s. At that time I need to find magnitude and direction of the velocity of P relative to B, and the magnitude and direction of the acceleration of P relative to B? Besides a basic diagram I honestly have no idea where to start. Can anyone point me in some direction to get the ball rolling???