A3_

2

’ : :

27. 11. 2008

A3 /a

: : 20

: 10

50min

;

.

x-t u-t

. , .1 , ,

.

.2

;

x= 12t -2t2

u= 12 -4t

= -4

.

.2

: a. b. c. d.

. . . .

H

.1

:

. .

. .

. .

. .

.1 :x

,

4t 4t 2 .

;

t0=0s 8m/s2. u=4+8t.

a. b. c.

t0=0s

d.

3m/s.

2

8m/s .

e.

, a. b.

2-0001-1.doc

3m/s.

.2

. . ;

.1 .2

2

’ t=0s

c.

t=6s;

.2

u(m/s) 10

t=0s

u0=2m/s. =4m/s2,

t1=2s t2=3s.

:

b. c.

2-0001-1.doc

5

3s.

a.

.2 .

.

.3 .1

3

6 t(s)

2

’ : :

27. 11. 2008

A3 /b

: : 20

: 10

50min

;

. x-t .

u-t ''

, . .1 , ,

x-t, u-t

.

-t.

.2

;

x= 40t +2,5t2

u= 20 +5t

=5 .2

.

, a. b. c. d.

.

. . . .

H

.1

: . . .

a. b. c. d.

.

.1 :x

,

3t 2t 2 .

;

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

a. b. c.

t0=0s

d.

3m/s.

2

- 4m/s .

e.

,

2-0001-1.doc

3m/s.

.

.2

2

’

a. . b. c.

.1 .2

;

u(m/s)

I

10

t=0s t=5s;

.2

6

II

t=0s u0=20m/s. t2=3s. b.

2-0001-1.doc

:

3s.

a. c.

= -4m/s2,

t1=2s

.2 .

.

.3 .1

3

5

t(s)