Q1. Some sliding rocks approach the base of a hill with a speed of 14m/s. The hill rises at 41.0 degrees above the horizontal and has coefficients of kinetic and static friction of 0.400 and 0.630, correspondingly, with these rocks. Start each part of your solution to this problem with a free-body diagram.

Find out the acceleration of the rocks as they slide up the hill.

If it slides down, find out its acceleration on the way down, else enter 0.

Q2. A college campus features a large fountain surrounded by the circular pool. Two students start at the northernmost point of pool and walk slowly around it in opposite directions.