___S__ - ___S___ =2.5s 340m/s 5200m/s
风速 2m/s 1m/s 1.2m/s 3.1m/s 4.2m/s 2.5m/s 2.5m/s 1.9m/s 1.1m/
s/m t/s
10m/s=?km/s
10m/s=____km/s
108Km/s=多少m/s?
(1/2)单位换算:72Km/h=()m/s 1m/s=()m/s 340m/s=()km/h 30cm/min=()m
108km/h= m/s 8m/s=
1.2m/s=[ ]km/h 2.5m/s=[ ]km/h 30m/s=[ ]km/h 700m/s=[ ]km/h
km/h=?m/s?
30m/min= 多少 m/s
72m/min = m/s
60m/min = m/s