<image>(This problem is worth 10 points) Given a number line with three points A, B, and C, representing the rational numbers -26, -10, and 10 respectively. A moving point P starts from A and moves towards the end point C at a speed of 1 unit per second. Let the time for point P to move be t seconds.  (1) Express the distances from P to points A and C in terms of t: PA = ________, PC = ________ (2) When point P reaches point B, point Q starts moving from point A towards point C at a speed of 3 units per second. After reaching point C, Q immediately returns to point A at the same speed. After point Q starts moving, express the distance between points P and Q in terms of t. (Friendly reminder: consider the positions of P and Q.)