2.
, , , . . . .
( ) . , , , ; .
, , , . , , , . . , , , , . , , ,
, , . (L). 1.
: , .
, , (s), . -1.
, , . , , . , t ~ 1 , t ~ 10 , t ~ 10 . v = s /t. /. / (36 / = 10 /). .
, , , . , =(v v 0)/t. /2.
.
s = v 0 t + at 2 / 2;
v = v 0 + at.
, ( ), , = 0, : v = const, s = vt.
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, , . . , .
, . . > ,
= const.
: v = v 0 + at, s = V 0 t + at 2 / 2.
, . .
, ; , : v = v 0 + at, s = v 0 t - at 2 / 2. .
, (, , ), , , . . , . , . , , , , , . , , , 1.
. 1 . 2
, , (. 2).
.
.
: , , , , ..
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, , .
, , , .
.
.
(), .
, , , .
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(, ). . (V1 , V0- , V=V1+V0).
: , , . [pic]
: s = v0t + at2/ 2; v = v0 + at.
, ( ), , = 0, : v = const, s = vt.
, , . . , .
, . . > ,
a=const.
: v = v0 + at, s = V0t
+ at2/ 2.
, .
.
, ; , : v = v0 + at, s = v0t - at2/ 2. .
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2
. .
, (. 3), : ) , , ;
) , ; ) . , , .
, . , , , . , , . .
.
, , . : ) ; ) ; ) .
. 1 , 1 1 / , . , , . , .
R=F1+F2+...+Fn,.
. , . : F = IlBsina,
F = qvBsina ., F = q 1 q 2 / r 2; : F = Gm 1 m 2 / r 2. , , . :. Fynp = - kx ( ), F = MN .
.
: , , , , , : = F / m.
: F = .
3