Class Project (Sprint)

It would be really helpful if you someone help with thse questions. I looked but just coudlnt find a book or article which anwers these.

Like how many heats are involed in international 100 m sprinting event?

What are the usual sprint times? elite and collegiate level? men and women

What are the environment factors which affect sprint events? like most competition are held on turf i guess

Wha t are the cute and chronic injuries associated? And does sprintinh have a functional component to it whcih can be trained?

An artcile explaining all these would be also be of great help. I need to reference everything hence. I know Speed Trap goes in to all this, but I havent got the time to get it and I have read the book from my previos college libraray.