Question

How does the relative motion of a motorcycle affect the frequency of the sound heard by an observer on the sidewalk?

A. As the motorcycle approaches the observer, the frequency drops.

B. As the motorcycle passes the observer, the frequency remains the same.

C. As the motorcycle approaches the observer, the frequency increases.

Answer 1

Answer:c

Explanation: when u walk down a road and u hear a motorcycle driving down the road you don't here it start at the house .u hear it as it gets closer to you common sense.

Answer 2

C. As the motorcycle approaches the observer, the frequency increases.

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