Which statement correctly describes a characteristic that a scientific measuring tool should have? O A. To be accurate, it must be able to make measurements that are close to the actual value. B. To be accurate, it must be able to make measurements using very small units. O C. To be accurate, it must be able to make measurements using very large units. D. To be accurate, it must be able to give consistent measurements of a quantity​

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.