Two objects cannot travel in opposite directions without performing work if they are subject to opposing forces. The discussion highlights that any force acting on a moving body results in work being done, even if the forces oppose each other. The concept of using opposing forces to achieve motion without work is deemed impossible, as both forces would perform negative work, leading to energy loss in closed systems. The notion of free energy is mentioned but ultimately dismissed as unfeasible in this context. Overall, the consensus is that work is an inherent aspect of any force acting on a moving object.