5. Consider three books denoted A, B, and C with masses m A = 20kg, m3 2 51439, and m0 2 3kg stacked on top of each other sliding across the floor: The books do not slide relative to each other. In other words, the books all have the same velocity. There is friction between books A and B and there is friction between books B and C but the coefcients of static and kinetic friction are unknown. There is also friction between book 9' and the oor. The coefficient of kinetic friction between book C' and the oor is pk = .5. Book B is pulled by a force Fpuu as shown above. The force Fpull has a magnitude of 150N. All three books accelerate at the same rate 6 and the books only move horizontally (they never move vertically). a) Without calculating anything, do you think the net force on each book should be the same or different? If yes, explain your reasoning. If not, rank the magnitude of the net force on each book from largest to smallest (again, you don't need to calculate anything yet, just think about what physically makes sense). b) Is the friction between the books A and B static friction or kinetic friction? How about the friction between books B and C? c) Draw a free body diagram for each book and identify which forces are pairs via Newton's third law. You might have some forces that do not appear to be paired with another force in your free body diagrams. How do you explain this? Does the system violate Newton's third law? Why or why not? (1) Find the magnitude and direction of every force in your free body diagrams, the net force on each book, and the acceleration (13. How does the net force on each book compare to your answer to part a)