(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

A plane passes from 900 meters over my head. I hear the shockwave after 2.2 seconds. At what speed in Mach is the plane flying ? Speed of sound = 331. 4 m/s

2. Relevant equations

Machs = speed of plane / speed of sound

3. The attempt at a solution

I dont have any clue where to go with this, maybe find the angle of the cone ? it gave me an angle of like .14 degrees and an impossible answer of the plane speed.... dah

Thanks in advance

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# Homework Help: Plane and shockwave

**Physics Forums | Science Articles, Homework Help, Discussion**