when we fly a drone in stationery train ,suddenly train start moving so what happen with the position of drone

Question

 what is the position of drone if train suddenly move 

Answer 1

If the drone were dependent on the outside air (like flying above a flatcar on with the car windows open), it would remain dependent on that air and not the train. So the train would leave it behind.

 

However, when the drone is flying inside a car on the train, it is dependent on the air in the train.  So, when the train moves the air moves and the drone moves relative to the ground (although, if you were on the train, it would appear to stay in the same position just like you are seated on the train and not moving).