At rest, a car\'s horn sounds at afrequency of 505 Hz. The horn issounded while

Question

At rest, a car's horn sounds at afrequency of 505 Hz. The horn issounded while the car is moving down the street. A bicyclist movingin the same direction with one-third the car's speed hears afrequency of 444 Hz. What is the speedof the car?
1 m/s

Is the cyclist ahead of or behind the car? At rest, a car's horn sounds at afrequency of 505 Hz. The horn issounded while the car is moving down the street. A bicyclist movingin the same direction with one-third the car's speed hears afrequency of 444 Hz. What is the speedof the car?
1 m/s

Is the cyclist ahead of or behind the car? At rest, a car's horn sounds at afrequency of 505 Hz. The horn issounded while the car is moving down the street. A bicyclist movingin the same direction with one-third the car's speed hears afrequency of 444 Hz. What is the speedof the car?
1 m/s

Is the cyclist ahead of or behind the car?

Explanation / Answer

   using the doppler effect we get that    (444 Hz) = (505 Hz) {[345 m / s +(vcar / 3)] / [345 m / s + vcar]}    solve for vcar

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