A motorcyclist is riding towards a building that has its top 300 meters higher than her viewing position on the road below. When she is 400 meters away from the building, the motorcyclist notes that the angle of elevation from her position to the top of the building is increasing at the rate of 0.03 radians per second. Find the speed of the motorcycle at the time when x = 400 meters and dθ
dt = 0.03 radians per second.