A television camera is positioned 4,000 ft from the base of a rocket launching pad. The angle of elevation of the camera has to change at the correct rate in order to keep the rocket in sight. Also, the mechanism for focusing the camera has to take into account the increasing distance from the camera to the rising rocket. Let's assume the rocket rises vertically and its speed is 700 ft/s when it has risen 3,000 ft. (a) How fast (in ftfs) is the distance from the television camera to the rocket changing at that moment? :Ws (b) If the television camera is always kept aimed at the rocket, how fast (in radfs) is the camera's angle of elevation changing at that same moment? S mars A plane flies horizontally at an altitude of 4 km and passes directly over a tracking telescope on the ground. When the angle of elevation is E, this angle is decreasing at a rate of E radimin. How fast is the plane traveling (in km/min) at that time? (Round your answer to 6 two decimal places.) km/min