The formula to calculate the ground speed (GS) is:
\[ GS = M \times S \]
Where:
Let's say the Mach number is 2 and the speed of sound is 343 m/s. Using the formula:
\[ GS = 2 \times 343 \]
We get:
\[ GS = 686 \]
So, the ground speed (\( GS \)) is 686 m/s.