Calculate the kinetic energy in joules of an automobile weighing 2135 lb and traveling at 55 mph. (1 mile = 1.6093 km, 1lb = 453.59 g). A)1.2 × 10⁴ J B)2.9 × 10⁵ J C)5.9 × 10⁵ J D)3.2 × 10⁶J E)3.2 × 10^-6 J

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Quizplus · Accepted Answer

Kinetic energy = 1/2 mv^2 = 1/2 (2135 lb * 453.59 g/lb * (1 kg/1000 g) * (55 mph * 1.6093 km/h * (1000 m/km) * (1 h/3600 s))^2 = 2.9 * 10^5 J

Calculate the Kinetic Energy in Joules of an Automobile Weighing