Free-fall motion refers to the motion of an object that starts to fall only from a standstill under the action of gravity. This kind of motion can only occur under vacuum conditions. In the presence of air, if the resistance of air is relatively small and can be ignored, the object's fall can be approximated as a free-fall motion. Based on the above definitions, which of the following can be considered approximately as a free-fall motion? ['Ripe apples are blown from the tree by the wind.', 'A plane in flight is hit by a missile and falls.', 'The ball that was thrown was not caught and fell to the ground.', 'At noon in winter, the ice edge melts and falls from the eaves.']