1. The problem statement, all variables and given/known data This question is based on the chapter of "rotational motion": "Why does sitting closest to the center of a vehicle provide the most comfortable ride in a bus traveling on a bumpy road, a ship in choppy seas, or an airplane in turbulent air?" 2. Relevant equations 3. The attempt at a solution Something to do with being at the center of a circle...? But a bus on bumpy road isn't a circle...?