Chapter 1, Problem 105DQ

Because Earth routes once every 24 hours, the west wall in your room moves in a direction toward you at a linear speed that is probably more than 1000 km per hour (the exact speed depends on your latitude). When you stand facing the wall, you arc carried along at the tame speed, so you don’t notice it. But when you jump upward, with your feet no longer in contact with the floor, why doesn’t the high-speed wall slam into you?