Hi there!
II. Linear momentum of the system is zero.
This is an example of a RECOIL collision. With the Law of Conservation of Momentum, momentum remains constant before and after the collision.
Thus, the total momentum would also be equivalent to zero after the collision.
The answer is evolution. When a specifies evolves over time they change and adapt to their environment.
Answer:
Since the ball becomes positively charged, it will repel as like charges repel.
