Chapter II: Book I

~CHAP. 1.~ _Of the laws of motion_
_The first law of motion proved_ p. 29
_The second law of motion proved_ p. 29
_The third law of motion proved_ p. 31

~CHAP. 2.~ _Further proofs of the laws of motion_
_The effects of percussion_ p. 49
_The perpendicular descent of bodies_ p. 55
_The oblique descent of bodies in a straight line_ p. 57
_The curvilinear descent of bodies_ p. 58
_The perpendicular ascent of bodies_ ibid.
_The oblique ascent of bodies_ p. 59
_The power of gravity proportional to the quantity of
matter in each body_ p. 60
_The centre of gravity of bodies_ p. 62
_The mechanical powers_ p. 69
_The lever_ p. 71
_The wheel and axis_ p. 77
_The pulley_ p. 80
_The wedge_ p. 83
_The screw_ ibid.
_The inclined plain_ p. 84
_The pendulum_ p. 86
_Vibrating in a circle_ ibid.
_Vibrating in a cycloid_ p. 91
_The line of swiftest descent_ p. 93
_The centre of oscillation_ p. 94
_Experiments upon the percussion of bodies made
by pendulums_ p. 98
_The centre of percussion_ p. 100
_The motion of projectiles_ p. 102
_The description of the conic sections_ p. 106
_The difference between absolute and relative motion,
as also between absolute and relative time_ p. 112

~CHAP. 3.~ _Of centripetal forces_ p. 117

~CHAP. 4.~ _Of the resistance of fluids_ p. 143
_Bodies are resisted in the duplicate proportion of
their velocities_ p. 147
_Of elastic fluids and their resistance_ p. 149
_How fluids may be rendered elastic_ p. 150
_The degree of resistance in regard to the proportion
between the density of the body and of the fluid_
_In rare and uncompressed fluids_ p. 153
_In compressed fluids_ p. 155
_The degree of resistance as it depends upon the figure
of bodies_
_In rare and uncompressed fluids_ p. 155
_In compressed fluids_ p. 158