Two teenagers face felony charges after a 12-year-old child sustained serious injuries at an Upstate New York playground when the pair allegedly used an electric motorcycle to spin playground equipment, ejecting the victim.The Mechanicville Police Department arrested a 14-year-old and a 15-year-old on Friday, charging each with one count of first-degree reckless endangerment, a class D felony. The department will not release the suspects’ names …