You're in a space station. It's shaped like inner tube of a tire. It's rotating, you're standing on the floor inside "inner tube" station. (the floor is the inside part of outer rim of tube) You are holding a marble, you are standing sideways with respect to rotation. (the space station is rotating clockwise) You drop the marble. Where does the marble fall? 1) to the left of you? 2) right at your feet in the center? 3) to the right of you? 4) it stays floating in air? 5) it floats up?