1. The problem statement, all variables and given/known data A wet floor sign is pushed on the top and it starts falling. Just before hitting the floor the upper point of the sign sign hit a foot. The weight of the sign is 5 pounds (2.27 Kg or 22.24 N). The sign is 2 feet tall (0.61 m). 2. Relevant equations With what force and energy would the foot be hit? 3. The attempt at a solution Unfortunately there is no attempt at a solution, I don't have the knowledge yet. I tried to apply some equations I found but it didn't make sense to me.