A 1423 kg car is traveling down the road at 105.0 km/h. while traveling at this rate of speed, what is the kinetic energy of this vehicle in kilojoules?

605.3 kilojoules First, convert the 105.0 km/h to m/s 105.0 km/h * 1000 m/km / 3600 s/h = 29.16666667 m/s Now calculate the energy using the E = 0.5 M V^2 formula E = 0.5 * 1423 kg * (29.16666667 m/s) ^2 E = 711.5 kg * 850.69 m^2/s^2 E = 605269.0972 (kg m^2) / s^2 E = 605269.0972 J E = 605.2690972 kJ Rounding to 4 significant figures gives 605.3 kilojoules