Under the action of force P, the constant acceleration of block B is 6 ft/sec2 up the in...

Under the action of force P, the constant acceleration of block B is 6 ft/sec² up the incline. For the instant when the velocity of B is 3 ft/sec up the incline, determine the velocity of B relative to A, the acceleration of B relative to A, and the absolute velocity of point C of the cable.