Is pushing a police officer hand away considered assault?
Yes, it is. Any "un-wanted" touching of ANYBODY (let alone a police officer) is legally and technically an assault.
How much jail time will you get for aggravated assault on a police officer in the state of New Jersey?
Assault and Battery on a Police Officer is a serious criminal offense. There is a common misconception about Assault, and I'll explain this here. Assault is not the unlawful touching of another person, that is Battery. Assault is to provoke fear in someone that you may batter them (hit them). If you've been charged with Assault & Battery on a Police officer, it would be suggest that you seek legal counsel to protect your rights.
From the NY State Statute: § 120.11 Aggravated assault upon a police officer or a peace officer. A person is guilty of aggravated assault upon a police officer or a peace officer when, with intent to cause serious physical injury to a person whom he knows or reasonably should know to be a police officer or a peace officer engaged in the course of performing his official duties, he causes such injury by means of…