A block weighing 22 Newton is held at rest against a vertical wall by a horizontal force of magnitude 60 N. The coefficient of static friction between the block and the wall is 0.55, and the coefficient of kinetic friction between them is 0.38. In six experiments, a second force is applied to the block and directed parallel to the wall with the magnitude and 34 N, and up. Calculate the frictional force and the acceleration on the block, including sign?