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You are driving on a straight and endless Route 77 highway with your car. Ahead of you, at the ho...

You are driving on a straight and endless Route 77 highway with your car. Ahead of you, at the horizon, a policeman stands and points his radar to you and measures your speed. The radar he is using is working on Doppler shift principle at 1800MHz. It detects a frequency shift of 800 Hz in the reflected signal from your car compared to the transmitted signal. What is the speed of your car measured by the radar? Express you answer in km/hour
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he relatien beween Af ond the speed 200 gec

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