posted by Anonymous .
Two chunks of ice are sliding on a frictionless frozen pond. Chunk A, with mass mA=5.0kg, moves with initial velocity vA1=2.0m/s parallel to the x-axis. It collides with chunk B, which has a mass mB=3.0kg and is initially at rest. After the collision, the velocity of chunk A is found to be vA2=1.0m/s in a direction making an angle α=30 degrees with an initial direction. What is the final velocity of chunk B?