单位换算:72Km/h=_m/s; 15m/s=_Km/h;180m/min=_m/s;340m/s=_Km/h.

问题描述:

单位换算:72Km/h=______m/s; 15m/s=______Km/h;180m/min=______m/s;340m/s=______Km/h.

72km/h=72×1km/h=72×

1000m
3600s
=20m/s.
15m/s=15×1m/s=15×
1
1000
km
1
3600
h
=54km/h.
180m/min=180×1m/min=180×
1m
60s
=3m/s.
340m/s=340×1m/s=340×
1
1000
km
1
3600
h
=1224km/h.
故答案为:20;54;3;1224.