Consider a shell that has a muzzle velocity of `45ms^(-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)

Options

A. Shell may hit the ground at point A.
B. Shell may hit the ground at point B.
C. Shell may hit a point on earth which is behind point A.
D. Shell may hit a point on earth which is behind point B.

Answer

B, D

Explanation

b,d. `vecV_(s//G) = vevV_(s//A) + vecV_(A//G)`
Horizontal component of velocity of shell will be in the direction
of velocity of air plane.