Can you solve these physics riddles? ft Simone Giertz - Part 1/3

Here's a piece of bicycle trivia related to the pedal thing: the first American bicycle builders to provide left-hand/right-hand threading on  bicycle pedals were two guys in Dayton Ohio named Orville and Wilbur Wright.  Wright Cycles are very desirable to collectors, and according to the experts in the field, the Wrights advertised this innovation widely in order to differentiate their product in the marketplace.