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:

Directive Leader

A leadership style characterized by giving clear, explicit instructions and closely supervising task execution.

Supportive Leader

Leadership style characterized by consideration, friendliness, and support for subordinates, fostering a positive work environment.

Hersey and Blanchard

Psychologists who developed the Situational Leadership Model, which suggests that the most effective leadership style varies depending on the maturity level of team members.

Situational Leadership Model

A leadership theory proposing that effective leadership varies according to, and must adapt to, the needs of the situation and the readiness of the team being led.