. .
1- ( ): , , , .
2- (): , .. , . F=ma a=F/m
3- ( ): . F12=-F21
4- ( ): .. , .
2- .
1- (): ( )
2- (): , , ( )
.
- ..
- (. )
.
( ), .
, , t, v , , z .
-
.
, . :
, , t .
, 3-
:
, , , .
F = F (t)
a = dv / dt . :
|
|
v = v 0 + (1/ m) ,
x = x 0 +v 0 t + (1/ m) .
F = F (x)
a = vdv / dx
:
F = F (v)
:
t, a = dv / dt.
, a = vdv / dx.