An ambulance is stationary at the side of a road, with its siren on at a frequency of 1065 Hz. As a car driving on the road at a speed of 25.5 m/s approaches the ambulance, what frequency of sound would the driver hear? Speed of sound is 343 m/s Group of answer choices 991 Hz 986 Hz 1,144 Hz 1,151 Hz

| Question 11 An ambulance is stationary at the side of a road, with its siren on at a frequency of 1065 Hz. As a car driving on the road at a speed of 25.5 m/s approaches the ambulance, what frequency of sound would the driver hear? Speed of sound is 343 m/s O 991 Hz O 986 Hz O 1,144 Hz O 1,151 Hz