Two Cars,one in Front of the Other,are Traveling Down the Highway

question 37

Multiple Choice

Two cars,one in front of the other,are traveling down the highway at 25 m/s.The car behind sounds its horn,which has a frequency of 540 Hz.What is the frequency heard by the driver of the lead car? (v_sound = 340 m/s)

• A) 463 Hz
• B) 540 Hz
• C) 579 Hz
• D) 500 Hz