A fire engine is moving to the right at a speed of 72 km / h while sounding the siren with a frequency of 1000 Hz. At the same time a motorcyclist was also speeding along with the fire engine the fire. Determine the speed and position of the motorcyclist in front or behind the car, approaching or away from the car) if he hears the sire The frequency is 900 Hz if it is known that the speed of sound is 340 m/s andmotorcyclist driving under the following conditions: a. In the same direction as the fire engine b. The opposite direction to the direction of motion of the fire engine

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