Cole and blayne were attempting to push hailey on a wheeled chair with enough force so hailey would run into mr young. they figured out they needed a 50 n force to run the chair into mr young. cole and blayne were both applying force toward mr young. cole was applying force a 20 n force to the left, and blayne was applying (with all of his strength) a force of 15 n to the left. what was the net force if we ignore friction?