Solve the all parts of following question given below:
Question: A white billiard ball with mass mw = 1.44 kg is moving directly to the right with a speed of v = 2.86 m/s and collides elastically with a black billiard ball with the same mass mb = 1.44 kg that is initially at rest. The two collide elastically and the white ball ends up moving at an angle above the horizontal is 47° and the black ball ends up moving at an angle below the horizontal is 43°.
Part A: What is the final speed of the white ball?
Part B: What is the final speed of the black ball?
Part C: What is the magnitude of the final total momentum of the system?
Part D: What is the final total energy of the system?
I need help to find the magnitude of the final total momentum of the system.