7
A B C D
8 F1 6J F2 8J F1F2
A14J B10J C2J D 2J
9
A B
C D
10 10m/s
16m
0.6s vt
A18m/s2B6m/s2C5m/s2D4m/s2
11
A.
B.
C.
D.
12 m M=3m