Solution:
By conceptual
An object is dropped from an aeroplane which is moving horizontally when it is at point A, then among the following, the correct statement is
1) The path of the object as seen by the pilot is vertically downwards
2) The path of the object as seen by the observer on the ground is the curve ABC
3) The path of the object as seen by the observer on the ground is AD
4) The path of the object as seen by the pilot is ABC
By conceptual