Two Motorcycles Are Traveling in Opposite Directions at the Same

question 8

Multiple Choice

Two motorcycles are traveling in opposite directions at the same speed when one of the cyclists blasts his horn, which has frequency of 544 Hz. The other cyclist hears the frequency as 522 Hz. If the speed of sound in air is 344 m/s, what is the speed of the motorcycles?

• A)5.90 m/s
• B)7.24 m/s
• C)8.19 m/s
• D)10.0 m/s
• E)11.6 m/s

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Definitions:

Negative Externalities

External costs.

Marginal Social Cost

Marginal social cost is the total cost society bears for the production of an additional unit of a good or service, considering both private costs and any external costs.

Species Extinction

The permanent disappearance of a species from Earth.

Property Rights

Legal rights to possess, use, and dispose of assets, including land, buildings, and intellectual property.