An apple lying on the table of a carriage of a moving train moves relative to: 1) a passenger walking along the car
An apple lying on the table of a carriage of a moving train moves relative to: 1) a passenger walking along the car 2) a diesel locomotive 3) a passenger sitting in a car 4) a table
2) since the distance between the locomotive and the apple is constant and does not change, it means that the apple is motionless relative to the locomotive;
3) since the distance between the passenger sitting in the carriage is constant and does not change, it means that the apple is motionless relative to the sitting passenger;
4) since both the apple and the table are in direct contact with each other, the apple is not movable relative to the table;
1) since the distance between the apple and the passenger walking along the carriage changes, it means that the apple moves relative to this passenger.
Therefore, the correct answer is: 1) a passenger walking along the carriage.