. . .
. word .
5 30m/s
0.1s 0.3s 0.1s
10m/s
(1)
(2)
6 10 cm.
A BC
DE
7
(1) ACCDAD
(2)t2s
(3)
8(9 ) 110
( ) 4s
4s
3m/s 2 10s
(1) (2) km/h?
9(9 ) vt