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

Question

Quizplus · Accepted Answer

Since both cars are moving at the same speed, there is no relative motion between them, so the frequency heard by the driver of the lead car is the same as the frequency of the horn, 540 Hz.

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