# Question: On a day with a temperature of and no wind

On a day with a temperature of and no wind blowing, the frequency heard by a moving person from a 500-Hz stationary siren is 520 Hz.

(a) The person is (1) moving toward, (2) moving away from, or (3) stationary relative to the siren. Explain.

(b) What is the person’s speed?

(a) The person is (1) moving toward, (2) moving away from, or (3) stationary relative to the siren. Explain.

(b) What is the person’s speed?

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