Negative force can result in positive work if the angle between the force and displacement is less than 90 degrees. The definition of work involves the dot product of force and displacement, where positive work occurs when both force and displacement are in the same direction. If both force and displacement are negative, the resulting work can still be positive. This highlights the importance of understanding the relationship between force direction and displacement in calculating work. Overall, the discussion emphasizes the nuances of how force and displacement interact in physics.