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A. You are driving on the freeway at 100 km/h when you see an ambulance approaching...

A. You are driving on the freeway at 100 km/h when you see an ambulance approaching you from ahead at 120 km/h with its siren on. The frequency of the siren is 1 kHz. Taking the velocity of sound to be 345 m/s, what is the perceived frequency of the ambulance siren as the ambulance moves towards you? What is the perceived frequency of the ambulance siren as the ambulance moves away from you?

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When am ambulance move亼tocard Δ yoa a) v-Vo Vo ys - XiO 348-28 317 1R b) ρken ambiance moves away Vt Vo 312 3 13 : 936 Hy

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