A block with mass m = 10.0 kg that is initially moving to the right with velocity u = 10.0 m/s slides along a frictionless track as shown. It moves down a d = 5.00 m deep valley before rising to a final height h = 2.35 m and moving through a rough horizontal surface with friction coefficient u = 0.345 m h d 1. What is the speed of the block at the bottom of the valley? 2. What is the speed of the block just before it traverses the rough surface? 3. How far along the rough surface will the block travel before it stops?