I know this is just a piece of whining, but I feel awful about it and want other's opinions. It wouldn't really bother if I didn't think I'm OK in physics. In a question I had to calculate potential energy and naturally wrote the answer down as joules. However, when I came back to check the question I wasn't as sure and with some kind of twisted logic concluded that the answer should be in Newtons. The question here is: how much of the points do you think the teacher will take off? The first part is correct until the units of the final answer, but in the second part I go with the assumption that I have a value for force on my hands. I expect no-one to care, but it'd be nice to hear some opinions.