, () .
, , , , :
a~F (m=const). (6.1)
, :
~ 1 / (F= const). (6.2)
(6.1) (6.2) , ,
a = kF/m. (6.3)
(6.3) : , (), , ().
k = 1.
a = F /m,
F = m a = md v /dt (6.4)
, () , (6.4) :
F =(d/dt)(m v). (6.5)
p = m v, (6.6)
, ( ) .
(6.6) (6.5),
F =d p /dt (6.7)
: . (6.7) .
(): 1 , 1 1 /2 :
1 =1 /2.
. . , ( ) (. (6.3)) . ( ), , (6.7).
: , , . , , . , . 10 F = m a : Ft ( ) F n ( ).
t=dv/dt n=v 2 /R, v=Rw, :
, , , F .