Al salir de su apartamento Juan olvida su billetera y su celular, y le timbra a su mama para que se los lance por la ventana que se encuentra a 15 m de altura. La mama deja caer primero el celular y 1 segundo despues lanza la billetera. Si los dos caen al mimso tiempo en las manos de juan que estqn a 1.5m del suelo ¿con que velovidad lanzo su mama la billetera ?

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.