Solve the all parts of following problem:
Problem: Two balls of equal mass (0.70kg) approach the origin along the positive x- and y-axes at the same speed (3.6m/s).
Part A: What is the magnitude of the total momentum of the system?
Part B: What is the direction of the total momentum of the system?
Part C: What is the magnitude of the total momentum of the system after both balls have passed through the origin?
Part D: What is the direction of the total momentum of the system after both balls have passed through the origin?
I want help to find the magnitude of the total momentum of the system after both balls have passed through the origin.