Meta xmas

38 : : :

,

u(m/s)

.

;

10

t=0s t=5s;

6 ,

.

; t=0s

t=6s;

0

, a. b. c. d.

H a. b. c. d.

3

5

t(s)

6

t(s)

.

. . .

u(m/s)

.

10

: . . . .

5 ,

x

2 3t

2t 2 .

0

; a. b. c. d. e.

t0=0s 2m/s2. u=3+4t.

x0=0m,

t0=0s

3m/s.

2

- 4m/s .

x

x

t

t

a 1. x 4. x

3m/s.

u0t

t

b

1 2 at 2

c

d

2. u 5. x

u0t

t

3. u

1 2 at 2

6. x

3t

u0 at

u-t

.

-t.

. .

u m/s

4

0s - 2s

2s - 4s.

.

t=3s. x0=0m.

t0=0s

2

=f(t)

.

2.1. . 95m

. -95m

t sec

u m/s 10

: . 70m

4

. 80m ;

2.2.

. 90m

. 80m

. 40m

. -20m

2.3.

. x= -90m

. x=100m

12 13 5

. x= -40m

t=0 . x=120m

x0=20m.

.

10

t sec

-10

. .

x ,

.

. ; x= -4 -40t +2,5t2

u= 40 -5t

=5

.

u=f(t)

. :

u m/s

>0 t sec

x

u=f(t)

. :

<0

u m/s

x t sec

=f(t)

.

2.1.

u m/s 10

: . 70m

. 75m

. -95m

. 90m

. 70m

. 75m

. -95m

. 185m

;

2.2.

t=0

2.1.

. 60m

. 15m

. -5m

. 90m

13 5

x0=-80m.

-10

10 12

16 t sec