Wave Street
Mar5
sound wave: One day I went outside, I was very nearly hit by a car.?
Fortunately, the car sounded his horn and jumped out the road. But I realized that the frequency of the horn as the car approached me was a factor of 1.153 over the frequency after the car passed me and walked away from me. Calculate the speed (m / s) of the car. The speed of sound is 343 m / s. that the equations should I use?
f = f0 Use * vs / (VS-V) to address ... Vv decline in changing the relationship between the frequency of approaching / passing is 1.153 = (VS + v) / (vs-V), then v = 24.37 ..... 24.4 m / s
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