1. The problem statement, all variables and given/known data A man carries a 70.0 kg box. He caries it down a hallway 10.0 m, up a set of stairs for 4.0 meters, and down another hallway for 15.0 meters. How much work does he do? 2. Relevant equations W=fd 3. The attempt at a solution I am confused because I don't feel like there is enough information to answer. The problem doesn't say if he is walking at a constant velocity or not, but I assume he is. And it doesn't say what direction he is walking in. I feel like this is a trick question and no work is being done, but I am not sure because he walks up a set of steps. I would guess that the work being done is only when he is walking up the steps? And the answer would be (70.0)(9.81)(4.0). Would this be correct? Can someone please explain this to me? Thanks!