Problem 3 Consider the following scenario: a car is pulling a trailer along a road that goes over a mountain pass. They start from restr go up to the pass. and then come down. ending at the same elevation they started out from. but now moving with some constant velocity. Substantial amounts of heat are generated in the car (engine, brakes) in the process; take this into account. but neglect the thermal energy that goes into into the atmosphere. For the following three choices of systems. draw the appropriate workenergy change diagrams. using the template given: Assume the car and trailer have the same mass, for simplicity. Make sure that the lengths of the bars in the diagrams for the different choices of system are consistent with one another. Briefly explain your diagrams. If work is done on the System, indicate which forces do work and give an explanation for its sign: (a) System: car, trailerr and earth. (b) System: trailer only. (c) System: car only