Physics assignment that need to be done

Hello, 

I have four physics assignments and they are through a website that need to be done withing the next 8 hours. The subjects are:

Ch.4 (Contact Interactions) 8 questions

Ch.9 (Multiparticle Systems) 7 questions

Ch.10 (Collisions) 5 questions

Ch11 (Angular Momentum) 8 questions