Help me with 5,6

5. Bart pulls Lisa on a sleigh with a force of 95 N. Lisa has a mass of 40 kg and the sleigh travels at a constant velocity. What is the coefficient of friction? 0.22 0.24 0.26 0.28 6. A block with a mass of 2.00 kg sits at rest on a frictionless table, attached to the block over the end of the table is a block with a mass of 1.00 kg. Once the system begins to move what is the acceleration of both blocks? 2.00 kg 9.81 m/s2 1.00 kg 4.91 m/s2 3.27 m/s2 2.45 m/s