Question baseball scouts often use a radar gun to measure, Ask an Expert

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Question: Baseball scouts often use a radar gun to measure the speed of a pitch. One particular model of radar gun emits a microwave signal at a frequency of 10.525 GHz.

Part A: What will be the increase in frequency if these waves are reflected from a 75.0mi/h fastball headed straight toward the gun? (Note: 1 mi/h= 0.447 m/s).

Please Help and show steps. I am trying to understand how to work this question. Thanks in advance!

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