A Cessna 152 overran RWY 36 and nosed over on the overrun area. The student pilot indicated that he attempted the takeoff from mid-field on RWY 36 without taking into account the density altitude. He also stated that he attempted to abort the takeoff after reaching 40 to 45 knots, but was unable to stop the aircraft before it overran the runway. The aircraft nose gear collapsed when it collided with a dirt bank and then the aircraft came to rest in a nose down attitude. The student pilot then stated, "The plane stopped moving, but a strong tailwind picked up the tail, nosing over the plane, which caused much of the damage." A FAA accident prevention counselor located at the airport stated the student pilot attempted to takeoff downwind on RWY 36 from mid-field. The winds were estimated to be from the S-SW at 20 knots and the temperature approximately 90 degrees. RWY 36 is 6,059 feet. The computed density altitude is approximately 5,500 feet.