It's funny how much of physics we do assuming a flat earth. If you did it "properly" you would calculate the orbit of the brick (assuming earth was a point mas

It's funny how much of physics we do assuming a flat earth. If you did it "properly" you would calculate the orbit of the brick (assuming earth was a point mass), then find the intersection between that orbit and earth's surface. But for small speeds and distances you can just assume g points down as it would in a flat earth