In describing the 49ers on Wednesday, Bill Belichick begin his assessment like this: “They’re a very physical football team.” Indeed, this might be the most physical team in football, and the Patriots must match that physicality. The 49ers’ offensive line is full of strong-bodied players, and they love to set the tempo in the running game. The 49ers have made strong offenses look vulnerable with their physicality, and the Patriots must be ready to handle that style of play and equalize it.