On a winter day, when the air temperature is C $0,$ a truck travels northward on a highway at $30\mathrm{.}0$ m$/$s$.$ A police car, also traveling northward, approaches the truck at $40\mathrm{.}0$ m$/$s from behind, with its siren sounding a frequency of $2000$ Hz$.$ What frequency does the truck driver detect before the police car overtakes him?

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To find the frequency that the truck driver detects from the police cars siren before being overtake... View the full answer