(13:21) If A is subsequently found to be at rest, this rest cannot be
the result of A's previous motion, for such motion can only have led
to continued motion; the state of rest therefore must have resulted from
something, which was not in A, namely, from an external cause determining
A to a state of rest.
____________________________________________________________________________
[AXIOMS]
[A.VIII] All modes, wherein one body is affected by body,
follow simultaneously from the nature of the body
affected and the body affecting; so that one and
the same body may be moved in different modes,
according to the difference in the nature of
bodies moving it; on the other hand, different
bodies may be moved in different modes by one
and the same body.
[A.IX] When a body in motion impinges on another body at rest,
which it is unable to move, it recoils, in order to
continue its motion, and the angle made by the line of
motion in the recoil and the plane of the body at rest,
whereon the moving body has impinged, will be equal to
the angle formed by the line of motion of incidence and
the same plane.
(13:22) So far we have been speaking only of the most simple bodies, which are only distinguished one from the other by motion and rest, quickness and slowness.
Pages:
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92