Doppler Effect: as You Stand by the Side of the Road

question 105

Multiple Choice

Doppler effect: As you stand by the side of the road, a car approaches you at a constant speed, sounding its horn, and you hear a frequency of 80.0 Hz. After the car goes by, you hear a frequency of 60.0 Hz. What is the speed of the car? The speed of sound in the air is 343 m/s.

• A) 64.0 m/s
• B) 49.0 m/s
• C) 16.0 m/s
• D) 36.0 m/s
• E) 25.0 m/s

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