The GRAVITY MODEL???

Question

Hey i need help with a AP project! Does anybody know ANYTHING about the gravity model?? Such as how you apply it and where its most and/or most nost applicable?? Also best examples why is and/or was a good model?

Thanks in advance!!

Answer 1

click the following sites

http://en.wikipedia.org/wiki/Gravity_mod...

http://faculty.washington.edu/krumme/sys...

http://info.worldbank.org/etools/Bspan/P...

^_^