Show II I I POPULAR MECHANICS Scientific Parent on a a. stroll You stroll You see out there there- therein in the street my son a simple illustration of a principle in mechanics The man with that cart pushes It in front of ot him Can you guess the reason why hy Probably notI not I will ask him Note ote his answer answer my myson myson son lion My good man why do you vou push that cart instead of pulling it if Coster Coster Cause Cauce e I aint a t ho boss hoss s you ou ouI old thickhead Lundon London ty |