A Train Moving at a Constant Speed Is Passing a Stationary

question 1

Multiple Choice

A train moving at a constant speed is passing a stationary observer on a platform. On one of the train cars, a flute player is continually playing the note known as concert A (f = 440 Hz) . After the flute has passed, the observer hears the sound with a frequency of 415 Hz. What is the speed of the train? The speed of sound in air is 343 m/s.

• A)7.3 m/s
• B)12 m/s
• C)21 m/s
• D)37 m/s
• E)42 m/s

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Definitions:

Dichotomy Corollary

A principle in psychology, particularly within George Kelly's personal construct theory, suggesting that a person's construction system is composed of dichotomous constructs, meaning it is organized into two mutually exclusive categories.

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Personality Theory

A branch of psychology that attempts to explain patterns of thoughts, feelings, and behaviors that make a person unique, through various theoretical perspectives.

Organizational Corollary

A principle related to how individuals structure and organize their perceptions and cognitions in a complex environment.