MOT 



MOON Eclipses of. See Eclipses. 



MOTION accelerated. (Whewell) 



Formulae for accelerated motion, whether the body is acted upon by 

 constant or variable forces, gravity being represented by g 32% feet, 

 its effect produced in 1 second. 



Force constant. 



v=ft = */. 



From these two equations we obtain, by simple eliminations, the foL 

 lowing results : 





t* 



If gravity be the constant force, substitute g for / in the above for. 

 mulae. 



Let a body be projected with a given velocity u, and acted on in the 

 same direction by a constant force/; it is required to determine the re- 

 lation of the space, time, and velocity. 

 Let s be the space described in the time t, then 

 5= t u + lft*' y 

 v= u + ft. 



If the body is projected in a direction opposite to that in which the 

 force acts ; 



s - t u | ft* ; 



V = U ft. 



Ex. 1. Space described by gravity in 10" = 1608i feet j and velocity ac- 

 quired 321 feet, 



Ex. 2. A body is projected upwards with a velocity of 100 feet ; to find 

 how high it will ascend in 2". 



* = *w |g-*2 g x 100 _ AX 32.2 X 4 = 135.6 feet 

 Ex. 3. Spaces described by gravity in the 1st, 2d, 3d, &c. seconds are 

 g 3g_ bg Tg 

 It* 2 ' 2 ' ~2~ ' 

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