You Are Driving Along a Highway at 35 $1340 \mathrm {~Hz}$

question 42

Multiple Choice

You are driving along a highway at 35.0 m/s when you hear the siren of a police car approaching you from behind at constant speed and you perceive the frequency as $1340 \mathrm {~Hz}$ You are relieved that he is in pursuit of a different driver when he continues past you,but now you perceive the frequency as $1300 \mathrm {~Hz} .$ What is the speed of the police car? The speed of sound in air is $343 \mathrm {~m} / \mathrm { s } .$

• A)38.4 m/s
• B)30 m/s
• C)39.2 m/s
• D)40.1 m/s
• E)41.7 m/s

---

Definitions:

Reproductive Potential

The maximum number of offspring an individual or population can produce under optimal conditions.

Innovation Process

The sequence of activities that an individual or organization undertakes to move an idea from conception to implementation and diffusion.

Innovation

The process of creating new ideas, products, or methods that bring about significant improvements or changes.

Progress

The forward or onward movement towards achieving a goal or improving a situation.