Introduction[]
Calc[]
Sonic crosses half the world in 4.5 seconds
Earth's Circumference = 40,075
Half the circumference = 20,037.5
4.5s = 20,037.5km
1s = 4452.78km
4452.78km per second = Mach 12,979 (Sub-Relativistic)
Final Tally[]
Mach 12,979 (Sub-Relativistic)