1Kg/m3= g/cm3 1m/s= km/h

问题描述:

1Kg/m3= g/cm3 1m/s= km/h

1Kg/m3=1000g / 10^6 cm^3=0.001g / cm^3
1m/s=0.001Km / (1/3600)h=3.6 Km / h