Aspace station that does not rotate cannot simulate gravity for its occupants. a)true b)false from within a rotating reference frame, the centrifugal force simulates gravity. a)true b)false on a rotating station, a person at the center of the station, in the axis, will be weightless. a)true b)false if astronauts had a floor to walk on, they would not feel weightless. a)true b)false for an astronaut walking around a spinning space station, she is pushing against the spinning floor, but the floor is not pushing back. a)true b)false

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.