I wasn't sure where to post this, but about a week ago, I sat a test called GAMSAT which has a science section comprising 20% physics, 40% chemistry and 40% biology. Physics isn't exactly my strong point, however, the developers cite needing only high school level understanding (I stopped physics in year 10). In one of the physics questions, it talked about the strong force, and displayed a graph of energy (y axis) vs distance (x axis). I might be totally wrong, but I went on the assumption that strong force energy increased with distance, as I had an interest in strong force theory a while back when i still did physics in high school. However, the graph showed an exponential decrease with energy, and this conflicted with what i knew (or thought i knew xD) about the strong force. The question asked whether the energy increased, decreased or remained constant. I chose increased, but going by the graph alone, the answer would be decreased. Am I thinking of all this wrong? I asked a friend who is very good at physics, and he told me that energy goes down, momentum goes down, but strong force goes up. Can anyone shed light on what happens?