# If the mach number o.93 and the local speed sound is 320 m/s, what is the speed of an airplane ?

the answer in the book is 3.0 x 10 to the power of 2m/s =1100 km/h.

please i really need help with this question ??????

### 2 Answers

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- ebsLv 77 years agoFavorite Answer
Speed of sound c = 320 m/s.

Mach number = 0.93

Speed of an airplane v = 0.93 × 320 = 297.6 m/s = 1071.36 km/h.

Cheers ebs

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