Two Automobiles traveling at right angles to each other collide and stick together. Car A has a mass of 1200 kg and had a speed of 25 m/s before the collision. Car B has a mass of 1600 kg. The skid marks show the wreckage was moving in a direction making an angle of 40 degrees with the original direction of A. What was the speed of car B before the collision, assuming that any other unbalanced forces are negligible?