2019-2020
1 2018 12 8223
A
B
C
D
2
A B
C D
3
A0.5s B1s C3s D10s
4
A6B5C4D3
5 L O O
g
A gL
B
C
D
6
20m/s 2s 8m/s 2s
A6m/s B12m/s C-8m/s D-12m/s