Cordella, an active duty marine, served in afghanistan. while she was on patrol with her friend, an explosive went off, killing her friend and injuring her. in the two months since her friend died, cordella has been jumpy irritable, avoids talking about her friend and once every few days experiences a flashback to the explosion. cordella is experiencing a disorder.

Post-traumatic stress disorder

Explanation:

Post-traumatic stress disorder is a mental disorder that affects the mental health of an individual who has been involved in a traumatic event or has witnessed events that are terrifying, shocking and distressful. The sufferer usually experience a series of uncontrollable flash backs to the awful event with constant anxiety, months after the traumatic event took place.

Cordella is obviously experiencing post-traumatic stress disorder as she continues to feel distressed and disturbed by the traumatic invent that occurred two months ago that she was involved in, which took the life of her friend.

the farther away the object is from the central star (the sun) it's gravitainal pull on the object is weaker when it is farther

explanation: