Ball A has a mass of 0.9 kg and moves with an initial speed of 10.6 m/s. It collides with stationary balls B and C, whose centers are on a line perpendicular to the initial velocity of ball A and that are initially in contact with one-another. Balls B and C are identical and have a mass of 0.6 kg. After the collision, balls B and C have the same speed, 3.2 m/s, but ball B moves at an angle of 26 above the horizontal and ball C moves at an angle of 26 below the horizontal. What is the velocity of ball A after the collision? (Answer in units of m/s.)