A Loudspeaker at the Base of a Cliff Emits a Pure

Multiple Choice

A loudspeaker at the base of a cliff emits a pure tone of frequency 3000.0 Hz.A man jumps from rest from the top of the cliff and safely falls into a net below.How far has the man fallen at the instant he hears the frequency of the tone as 3218.0 Hz? The speed of sound is 343 m/s.

A) 12.2 m
B) 15.3 m
C) 31.7 m
D) 46.8 m
E) 61.0 m