I. Solve the following problems completely: Show your complete solution and sketch the graph. 1. A block has a mass of 30 kg is moved across a horizontal surface by dragging with a cord attached to the front end of the block which is parallel to the horizontal and if the coefficient of friction is 0.3. Find, A. The force F exerted by the cord. B. The work in dragging the block over a distance of 15 m. C. What is the power output in USCS Units, if the block covered on the said distance after 10 seconds? 2. A 2.0 kg soccer ball traveling to the right with a speed of 22 m/s overtakes a 4.0 kg soccer ball traveling in the same direction as the first, with a speed of 10 m/s. If after the collision the soccer balls separate with a relative speed of 9.6 m/s, find the speed of each soccer ball. 3. A 3.0 kg ball traveling to the left with a speed of 25 m/s collides head on with a 5.0 kg ball traveling to the right at 18 m/s. A. Find the resulting velocity if the two balls stick together on impact. B. Find their final velocities if the coefficient of restitution is 0.75