Man hit woman with sock full of coins on Bronx train, cops say

A man whacked a 45-year-old mom in the head with a sock full of coins on a Bronx train, police said. The victim was with her 8-year-old son, and on her phone, on board a northbound 6 train entering the Hunts Point Avenue station around 3:45 p.m. Thursday when a man tripped over her foot,…