If you are talking about Young Justice Invasion (Season 2), Artemis and Kid Flash have been dating for 5 years now. He and Artemis have decided to leave the life of Justice and Ty and live normal lives.
he ran into a wall
Yes. It was confirmed, But we don't know who, Is going to die. Many speculate that it will be Artemis.
You can die giving birth no matter how old you are, but yes, pregnancies at a young age are known to cause more problems, although that's not always the case.
Flash Terry died in 2004.
Sandy Flash died in 1778.
She did not die.
No
he tripped
According to Wikipedia ( terrible resource site) and other websites, Artemis is thought to appear halfway thrugh the first season of young justice. The websites also state that there will be another regular teammate at the end of the season. Artemis first appeared in the Young Justice episode "Infiltrator" which aired on February 11, 2011.
Robert Justice died in 1889.
Andrew Justice died in 2005.