A compact car with a mass of 1,200 kg and a drag coefficient of 0.4 uses 30-cm-radius radial tires and has a 3.2-reduction differential. The engine of this car develops a torque of 235 N-m at 3,500 rpm, and a power of 110 kW at 5,500 rpm, with a transmission efficiency of 0.9. If this car can climb slopes of 20° and develops a maximum speed of 160 km/h, determine the gear ratio of first gear, fifth gear (highest gear), the Kg factor, as well as the traction developed when going up the hill and traction at top speed. To climb the hill, consider 490 kg of cargo, including passengers and fuel.