l () .: l ≥ 0, !
s() , .
s = 0 -
: s≤ l, s = 0 . l
u (/) 1) u = ; = ; ;
2) - , u = u0 + at u(t)
(/2) - .
; = ↑↑ -
↑↑ () ↑↓ -
^ -
- : , , , .
.
= + = -
u1 - ,
u2 ,
u (υ12) 1- 2-.
.
.
. | . | ||||||
xo =const x sx | sx sx
| ||||||
x = x0 + uxt x ~ t x0 t | x = x0 + u0xt + x x ~ t2 t t | ||||||
sx = uxt | sx=u0xt + sx = t! | ||||||
ux = const ux t | ux= uox+ a xt ux ux υ = 0 t t | ||||||
a = 0 vx t | a x = const t t |
.
. | |||||||||||
=2πRn(/) -
=2πn(/) . u = ω R
(/2) -
T = (), T =
| x = xo + uoxt + ; y = yo + uoyt +
ux= uox+ gxt; uy= uoy+ gyt
ux = u0 cosa uy = u0 sina
gx = 0 gy = - g
ux
uy s x |
.
. | . | |||||
1. u0 = 0 ; u = gt 2.Ec u0↑, ; u= u 0 gt Ec u0↑, ; u= -u 0 + gt 3.Ec u0↓ ; u= u 0 + gt ( ) |
h - , s - |
.
: S = | 2. .
1)
2) 2 S;
3) ,
| |||||||||||||
3. .
u(t)
S =S1 - S2 ℓ = S1+ S2 | 4. . (t) y(t) → ux = x΄, uy = y΄, = u΄x = x΄΄, y = u΄y = y΄΄, | |||||||||||||
5. . u = u ( ) . | 6. .
45˚ υ0 = const
| |||||||||||||
7. u o=0. S1 t =1 S1= = , uo=0 :
S1: S2: S3: : Sn = 1: 3: 5: 7: .: (2n-1) Sn = S1(2n 1) = (2n - 1) | 2) , uo=0 :
S1: S2: S3: : Sn = 12: 22: 32: 42: .: n2 Sn = S1n2 = n2 |