What are two positive and two negative coping strategies that a teenager might use in this situation?
If you're having a hard time dealing with the separation, it's a good idea to find a strategy to help you cope. Try talking to someone about your situation, and how you feel. You could try talking to your parents, but they may also be having a hard time and may not be very understanding. There are also many helplines that you could call to get help with dealing with your situation. It's also good to take up something you like to do, Like art or Writing, which can help you let out pent up feelings. It's good to vent every now and then, but it’s best to let it out in a positive way rather than taking it out on someone else. If you don’t find an outlet for your emotions, you may become upset or angry a lot, which could lead to unintentionally hurting others or separating yourself from them.
It would be a negative stratagy to either start binge eating or not eat at all, as it doesn't really do anything for you except for make your situation worse in the long run. Another bad strategy is to keep it all in and let all the emotions build up, cutting yourself off from the rest of the world. This can lead up to you losing friends and/or when those emotions build up too much, you take it all out on someone which can hurt them both physically and mentally.