A 15.2-Ibf block B starts from rest and slides on the 25.5 -lbf wedge A, which is supported by a horizontal surface. Neglecting friction. Determine the velocity of B relative to A after it has slid 3.1 ft down the inclined surface of the wedge. vB/A = i + j (ft/s) Determine the corresponding velocity of A. vA/O = i + j (ft/s)