Spaceman Spiff is on the planet X (g = 11.2 N/kg). He is dragging a 20.0 kg piece of space junk along a horizontal surface. A coefficient of friction between the space junk and the surface is 0.45. If Spiff is applying a horizontal force of 185 N on the junk i) what is the force of friction acting on the junk.(include a free body diagram and a schema diagram) ii) what is the acceleration of the junk