A police car traveling south toward Sioux Falls, Iowa, at 160 km/h pursues a truck traveling east away from Sioux Falls at 140 km/h. 160 km/h y Sioux Falls 140 km/h At time t = 0, the police car is 60 km north and the truck is 50 km east of Sioux Falls. Calculate the rate at which the distance between the vehicles is changing at t = 5 minutes. (Use decimal notation. Give your answer to three decimal places.)