Effective communication occurs when: a. information is sent through informal rather than formal channels. b. information is collected from various sources but sent to a limited audience. c. the sender convinces the receiver to accept the information sent. d. information is transmitted and understood between two or more people. e. the sender transmits information that is received by someone other than the intended receiver.

At a certain instant after jumping from the airplane a, a skydiver b is in the position shown and has reached a terminal (constant) speed vb = 52 m/s. the airplane has the same constant speed va = 52 m/s, and after a period of level flight is just beginning to follow the circular path shown of radius ρa = 2330 m. (a) determine the velocity and acceleration of the airplane relative to the skydiver. (b) determine the time rate of change of the speed vr of the airplane and the radius of curvature ρr of its path, both as observed by the nonrotating skydiver.