根据v=v 0+gt得:
t=
v -v 0
g =
39.2-9.8
9.8 s=3s
根据v 2-v 0 2=2gx得
x=
v 2 -v 0 2
2a =
39.2 2 -9.8 2
2×9.8 =73.5m
故答案为:3;73.5