Hi everyone. I'm in crisis mode over this take-home exam I have due in 12 hours. I've posted the 4 problems I'm stuck on and ANY help would be a life-saver. I can get all of them setup, but am completely clueless as to how to actually execute them. I have a few questions in specific: [Question 2] To determine the minimum stopping distance, wouldn't I need to know the mass of the block in order to calculate the normal force and, by extension, the force due to static friction? [Question 5] ......what?