38
.
’ :
:
5. 11. 2001 A2/a
: : 20
: 10
45min .
S.I.;
.1 , ,
.
x-t, u-t
-t.
H
.2
:
. .
. .
.
.
.
.
.2 .
u>0 u>0 U<0 U<0
.1
<0 >0 >0 <0
x
x
t
t
a 1. u
u0 at
t
b 2. x
u0t
t
c
1 2 at 2
3. x
d
3t
5. x
4. x
u0t
1 2 at 2 x
,
6. u
.1
4 3t 5t 2 .
;
t0=0s 5m/s2. u=3+10t.
a. b. c. d.
x0= 4m,
t0=0s
3m/s.
6m/s. 2
- 4m/s .
e.
.2
a1=1m/s2.
t1=10s u . .
2001a1.doc
.
x2=200m.
: .2 .3