Exactly. Now mark the ground (place a pen right under the pedal to mark the location) The pedal will move back in relation to the mark but notAn interesting thing I found when doing it with my bike balanced as best as I could without interference, as per the question, was that the pedal rotated up/towards me as the bike moved back. I thought the Matrix had broken!
as much as the rest of the bike. That question appeared in an Irish book/magazine I found in the dentists waiting room. I answered by post just giving the direction. A group of students in a Dublin university also got the direction right. Two right answers only.
The college decided as there was only one prize that each would have to explain. I won. If it had to be money I would have let the students have it for being such good sports, it was a pair of binocular, a good pair which are still lying around somewhere. 15 years ago.