8.(Pg. [24]) If attraction be in proportion to the mass, why does not a hill, draw towards itself, a house placed near it?
9.(Pg. [25]) How can the attraction of a mountain be rendered sensible?
10.(Pg. [25]) Why cannot two lines which are perpendicular to the surface of the earth be parallel to each other?
11.(Pg. [26]) Draw a small figure of the earth to exemplify this, as in [fig. 1. plate 1.]
12.(Pg. [27]) If bodies were not resisted by the air, those which are light, would fall as quickly as those which are heavy, how can you account for this?
13.(Pg. [27]) What then is the reason that a book, and a sheet of paper, let fall from the same height, will not reach the ground in the same time?
14.(Pg. [28]) What then will be the effect of increasing the surface of a body?
15.(Pg. [28]) What could you do to a sheet of paper, to make it fall quickly, and why?
16.(Pg. [28]) Inform me how a very dense body may be made to float in the air?
17.(Pg. [28]) The air is a real body, why does it not fall to the ground?