已知:S=15km,M=1.4,V声=340m/s
求:V导,t
1.M=V导/V声
V导=M*V声
=1.4*340m/s
=476m/s
=1713.6km/h
2.s=15km=15000m
t=s/v
=15000m/476m/s
=31.5s
已知:S=15km,M=1.4,V声=340m/s
求:V导,t
1.M=V导/V声
V导=M*V声
=1.4*340m/s
=476m/s
=1713.6km/h
2.s=15km=15000m
t=s/v
=15000m/476m/s
=31.5s