The answer above is NOT correct. (1 point) At noon, ship A is \( 40 \) nautical miles due west of ship B. Ship A is sailing west at \( 23 \) knots and ship B is sailing north at \( 18 \) knots. How fast (in knots) is the distance between the ships changing at \( 3 \) PM?
The distance is changing at _______
(Note: \( 1 \) knot is a speed of \( 1 \) nautical mile per hour.)