Consider a shell that has a muzzle velocity of 45 ms-1 fired from the tail gun of an airplane moving horizontally with a velocity of 215 ms-1. The tail gun can be directed at any angle with the vertical in the plane of motion of the airplane. The shell is fired when the plane is above point A on ground, and the plane is above point B on ground when the shell hits the ground. (Assume for simplicity that the Earth is flat)