Calculate the kinetic energy in joules of an automobile weighing 4345 lb and traveling at 75 mph. (1 mile = 1.6093 km, 1lb = 453.59 g). A)5.5 × 10^{5 J} B)5.5 × 10^-⁵ J C)1.1 × 10⁶ J D)2.2 × 10⁶ J E)2.2 × 10^-⁶ J

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Quizplus · Accepted Answer

Kinetic energy = 1/2 mv^2= 1/2 * 4345 lb * (75 mph)^2= 1/2 * 4345 lb * (75 mph)^2 * (1.6093 km/1 mile)^2 * (1000 m/1 km)^2 * (1 kg/2.205 lb)^2 * (1 J/1 kg m^2/s^2)= 1.1 x 10^6 J

Calculate the Kinetic Energy in Joules of an Automobile Weighing