A particle with an initial vertical height h is launched horizontally from the edge of a wall with an initial velo- city of vo. The particle enters a fixed tube with a length x. Inside the tube, the particle experiences friction, cau- sing a constant deceleration of -a (where a > 0). After exiting the tube, the particle follows a typical horizontal projectile motion. (a) What is the total horizontal distance that the particle travels from the edge of the wall to the ground? (b) To maximize the value of 4, what should be the length x of the tube? h X