A 2.10 kg block on a horizontal floor is attached to a horizontal spring that is initially compressed 0.0310 m. The spring has force constant 810 N/m. The coefficient of kinetic friction between the floor and the block is 0.41 . The block and spring are released from rest and the block slides along the floor. What is the speed of the block when it has moved a distance of 0.0110 m from its initial position? (At this point the spring is compressed 0.0200 m.)