As Shown in the Figure, a Man Is Traveling on a Bicycle

question 71

Short Answer

As shown in the figure, a man is traveling on a bicycle along a straight road that runs parallel to and right next to some railroad tracks. While moving at 10 m/s, he hears the whistle of a train that is behind him, as shown in the figure. The frequency emitted by the train's whistle is $820 \mathrm {~Hz}$ but the frequency the man hears is $774 \mathrm {~Hz}$ The speed of sound is 340 m/s.
(a)What frequency is heard by a stationary observer located between the train and the bicycle?
(b)What is the speed of the train, and is the train traveling away from or toward the bicycle?

---

Definitions:

Childhood

The period of human development from infancy to puberty, encompassing physical, mental, and emotional growth.

Gross Motor Ability

The capability to perform movements using the large muscles of the body, such as walking, running, and jumping.

Delayed

Occurring at a later time than expected or intended, often resulting in inconvenience or adjustment of plans.

Walking

The act of moving at a regular pace by lifting and setting down each foot in turn, never having both feet off the ground at once.