any self-respecting ammunition rocket fired from a gun, or MRLS at an angle close to 45 degrees, flies along the trajectory, the path of which resembles a parabola with two branches. The ascending branch (red) will be more gentle and descending (blue)- more steep. A rocket, due to the stabilizer at the tail, behaves on the descending branch of the trajectory, as an arrow released from a bow. And if it hits the ground, then it strikes it at an angle, which is determined by the tangent to the trajectory at the point of the strike. The tilt of the body of the projectile will always be in the direction, from which it had come. Plus or minus a few degrees. Even if it hits a concrete slab.