单位换算有个规则:大单位换算成小单位要乘以倍率,小单位换算大单位要除以倍率1km=1000m,1h=3600s36km/h=36*1000m/3600s,约分得到10m/s2m/s=(2/1000)m/(1/3600)s=2*3600/1000(km/h)约分得到7.2km/h
①∵1km/h= 1 3.6 m/s,∴36km/h=36× 1 3.6 m/s=10m/s;②∵1m/s=3.6km/h,∴2m/s=2×3.6km/h=7.2km/h.故答案为:10;7.2.