Sagot :
Answer:
1. The two injuries that my friend could have suffered are Concussion and Sprains.
2. Acute injuries. Because the injuries are caused by a sudden movement or impact while playing sport.
3. He doesn't need to be examined by a doctor If there's no more swelling or bruises around the injured area after a days or weeks. But when it is getting worst or experienced discoloration, my friend should set an appointment to a doctor.
Hopefully, it helps. Study hard< 3