Solve the all parts of given question:
Question: A 77.0 N box of oranges is being pushed to the South across a horizontal floor. As it moves, it is slowing at a constant rate of 0.87 m/s each second. The pushing force has a horizontal component of 21.5 N southward and a vertical component of 24.0 N downward.
Part A: Calculate the coefficient of kinetic friction between the box and floor?
Part B: Suppose the worker pushing the oranges decides instead to attach a rope to the box of oranges and pull from the other side (the South side). Suppose she pulls in such a way that the pulling force has components of the same size as did the pushing force, except that the vertical component would now be upward instead of downward. What would be the resulting acceleration of the box of oranges? Give the horizontal component, with North considered positive.
I need help to find the coefficient of kinetic friction between the box and floor.