Find the kinetic energy of the objects in the scenarios. A. A cosmic pion of mass 140 MeV/?2 flies through outer space at a speed of 9.47×103 km/s . See the hint for help converting MeV/?2 to kg. ?= J B. A cheetah weighing 4.10×102 N chases a gazelle at a speed of 33.7 m/s . ?= J C. A truck weighing 2.64 short tons speeds down the road at 75.6 mph . ?= J D. An asteroid of mass 2.71×1017 kg buzzes the Earth at a speed of 10300 mph .

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