The discussion revolves around calculating the new velocity of a 300g ball traveling at 20m/s after an impulse is applied. Participants emphasize the need for additional information, such as the mass and velocity of the bat, to solve the problem accurately. The impulse delivered to the ball is calculated to be 15J, derived from a force vs. time graph. It is noted that impulse is equivalent to the change in momentum, and the initial momentum of the ball is calculated as 6 kg·m/s. Without complete details, participants express the challenge of reaching a numerical answer for the ball's new velocity.