A biock with mass m- 17 kg rests an a frictioniess table and is accclerated by a spring with spring constant k- 4249 N/m after being compressed a distance x, -0.556 m from the spring's unstretched length. The fioar is trictioniess cxcept for a rough patch a distance d- 2.3 m long. For this rough path, the cocfficient of friction is u. -0.45. 1) How much work is done by the spring as it accolerates the black? Suter 2) What s the speed of the block right after t leaves the spring m/sut How much work is done by friction as the block crosses the rough spot? Sutm 4) What s the speed of the block after it passes the rough spot? Suter 5) Instead, the spring is only compressed a distance x -0.157 m before being released. How far into the rough path does the block slide before coming tores? Sutarl 6) What distance does the spring noed to be compressed so that the block will just barcly make it pat the roush patch when releascd! Sotmil 7) if the spring was compressed three times farther and then the block s released, the work done on the block by the spring as it accelerates the block ts: Othe same Othree times greater Othroe times les Oeine times greater Onine tines les Sutmi