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)