Author Question: Two cars are traveling in the same direction and with the same speed along a straight highway. Does ... (Read 77 times)

deesands · **on:** Jul 29, 2018

Two cars are traveling in the same direction and with the same speed along a straight highway. Does either driver hear a different frequency from the other car's horn than they would if the cars were stationary?

A) Yes, they both experience a Doppler shift.
B) Only the driver of the front car experiences a Doppler shift.
C) Only the driver of the rear car experiences a Doppler shift.
D) No, because neither driver experiences a Doppler shift.
E) It is impossible to predict.

Question 2

An airplane undergoes the following displacements: First, it flies 66 km in a direction 30 east of north. Next, it flies 49 km due south. Finally, it flies 100 km 30 north of west.

Using vector components, determine how far the airplane ends up from its starting point. A) 79 km
B) 81 km
C) 82 km
D) 78 km
E) 76 km