According to this diagram, what is the net force of this object? Responses 300 newtons 300 newtons, 500 newtons 500 newtons, 800 newtons 800 newtons, 1100 newtons 1100 newtons, A free-body diagram of the forces on a box. Box with dot in center. Short arrow up, longer arrow down. Up arrow labeled F sub air equals 300 N. Down arrow labeled F sub grav equals 800N.