The sound frequency shift's magnitude, or change in frequency, first decreases to zero before rising during the projectile flight when a ball is thrown up in the air
- At this point, the frequency emitted by the source becomes equal to that received by the microphone. This can be seen from the equation 2 for Doppler effect contained in the attachment below.
- This moment is short lives and the projectile soon starts a return journey downward under the influence of gravity. The velocity of the projectile is negative ( v < 0 ) and from the equation can be confirmed that the frequency received by the microphone increases as the projectile fall under gravity.
- This is so because as the projectile falls downward it velocity becomes more and more negative. And from the equivalent in the picture below, the frequency received by the microphone increases
Learn more about sound frequency shift from:https://brainly.com/question/15743506
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