One pool ball is launched in the positive x direction with a speed of 2.5 m/s. A second, identical pool ball is launched in the negative x direction with a speed of 1.2 m/s. The two collide in a glancing collision (not head on) and the second ball is deflected directly in the positive y direction with a speed of 1.4 m/s. A. Determine the final velocity of the first ball. Give your answer in unit vector notation.
B. If the collision took place in a time interval of 0.080 s and the mass of the pool balls is 0.16 kg, determine the magnitude and direction of the force acting on the first pool ball.