Question

A fighter jet is flying at Mach 3.2 in air of temperature 2 degrees C. What is the planes speed?

I really don't understand how to do this question. I'd appreciate your help!
the Mach number is how many times the speed of sound an object is moving

find the speed of sound based on the air temperature
So I tried this:
Mach # = v/sound
3.2 = v/332.22
1063m/s =v

Vsound = 331 + 0.61(2 degrees C)
=332.22

Would the 1063m/s be the correct answer?

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