1997 Nissan Maxima not sure what the problem is or what cat

i have a 1997 nissan maxima and it was recently in an accident and the front bumper was ripped off. the bumper was put back on and on the way home we noticed the battery light was on which it wasnt befor the accident. the car died a little after that and everytime we tryed to jump it the car would only stay running for a couple of minutes befor dying again. we just recently bought a brand new battery but the car still wont start and even though the batteries new the horn and the radio dont work. when you turn the key all the lights in the dash come on and the clock turns on but it wont turn over it doesnt make a clicking noise or anything..we were told it was probley the alternator and then it we were told it was a ground wire but we dont know for sure what it could be.