A sprinter crosses the finish line of a race. The roar of the crowd in front app

Question

A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 356 m/s . The roar from the crowd behind her approaches at 340 m/s .

Problem 27.1 Part A A sprinter crosses the finish line of a race. The roar of the crowd in front approaches her at a speed of 356 m/s. The roar from the crowd behind her approaches at 340 m/s What is the speed of the sound? sound m/s Submit My Answers Give Up Incorrect; Try Again; 29 attempts remaining Part B What is the sprinter's speed? m/S

Explanation / Answer

the speed of sound is mid-way between the two speeds indicated: (356 + 340)/2 = 348 m/s

the sprinter's speed is the difference between the sound of speed and either of the other speeds:
16 m/s

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