Five persons were injured, one critically, when a car and a newspaper delivery truck collided early yesterday in Southeast Washington, D.C. police reported.

They said the accident occurred about 4 a.m. at Savannah Terrace and 11th Place SE when a car driving west on Savannah Terrace and a truck heading north on 11th Place crashed in the intersection. The truck, a step-van, flipped onto its right side and slid about 40 feet before coming to a halt, police said.

The injured were taken to Greater Southeast Community Hospital, where the car's driver, Anthony Gross, 19, of 2832 Robinson Pl. SE, was listed in critical condition suffering from head injuries. A passenger in his car, Sharon Strothers, 18, of 1003 Marcy Ave., Oxon Hill, was listed in serious condition with facial injuries.

William C. Smith, 43, of 1100 Trenton Pl. SE, an independent distributor for The Washington Post who was delivering papers at the time of the accident, was undergoing tests and listed in guarded condition. Smith's sons, Miles, 14, and David, 16, who had accompanied their father on his route, were treated at the hospital for minor injuries and released. Police said the accident was under investigation.