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The security alarm on a parked car goes off and produces a frequency of 951 hz. the speed of sound is 343 m/s. as you drive toward this parked car, pass it, and drive away, you observe the frequency to
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The security alarm on a parked car goes off and produces a frequency of 951 hz. the speed of sound is 343 m/s. as you drive toward this parked car, pass it, and drive away, you observe the frequency to change by 99 hz. at what speed are you driving?

User Pritesh Bhoi
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951hz divide by 343m/s = 2.77259475
times the answer by 99hz = 274.48688
to 1 d.p is 274.5m/s
User Kerone
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