A robot used in a pharmacy picks up a medicine bottle at t=0. It accelerates at 0.15 m/s2 for 7.0 s , then travels without acceleration for 64 s and finally decelerates at -0.50 m/s2 for 2.1 s to reach the counter where the pharmacist will take the medicine from the robot. From how far away did the robot fetch the medicine?

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.