An automobile having a mass of 900Kg initially moves along a level highway at 100 Km/h relative to the highway. It then climbs a hill whose crest is 50m above the level highway and parks at a rest area located there. For the automobile, determine its change in kinetic and potential energy, each in kJ. For each quantity, kinetic and potential energy, specify your choice of datum and reference value at that datum. Let g = 9.81 m/s2.