6. {7 marks) Suppose a migratin the bird passes directly above Hf EDEiE-Eljl'it velocity of 42 km/h. At time t = 0 (a) How fast is the distance between the bird and the radar station changing after 10 minutes? Round your nal answer to 2 decimal places and provide units. (b) How fast is the distance between the bird and the radar station changing at time t = 0. Le. when the bird is directly above the radar station? Is this reasonable? Explain briefly