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AP Physics 2
14.5 The Doppler Effect
IntermediateMCQGraphicalMathematicalConceptual20.3k
Detected frequency versus time for the falling buzzer.
Detected frequency versus time for the falling buzzer.
A small buzzer emitting a continuous sound of constant frequency \(f_0 = 500\text{ Hz}\) is dropped from rest from the top of a cliff. A stationary sound sensor located at the top of the cliff records the detected frequency \(f\) as a function of time \(t\), as shown in the graph. The speed of sound in air is \(340\text{ m/s}\). What is the speed of the buzzer immediately before it impacts the ground?

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