Fun Riddles

Question: You are running in a 400 meter race and you overtake the last person, what place are you now in?

Question: In spring I look gay, Covered in a green array, The warmer it gets the more clothing I wear, As the cold grows, I throw away my clothes.

What am I?

Question: What flies when it's born, lies when it's alive, and runs when it's dead?

Question: What has ten letters and starts with gas?

Question: I live above a star, but I do not burn.
I have 11 friends, but they do not turn.
I am visited in sequence: never, once, or repeatedly.
My initials are PQRS.

Now tell me, what do I mean?