B
C
D
8 , ,
,
A B C D
9
A
B
C
D X
10 , 78 , ,
A100 B 60 C 40 D 80
11 _____
_____
12 __________
___________
13
1 _____
2 _____
14 , _______( ) , ,
, ________ .
15 a
b 30m
______m/s
______
16 S
S' S' _____
_____