Question

Find the kinetic energy of the objects in the scenarios.

A. A cosmic pion of mass 140 MeV/c2 flies through outer space at a speed of 9.61×103 km/s. See the hint for help converting MeV/c2 to kg.

K=_____ J

B. A cheetah weighing 6.20×102 N chases a gazelle at a speed of 33.1 m/s.

K=______J

C. A truck weighing 3.24 short tons speeds down the road at 65.1 mph.

K=______J

D. An asteroid of mass 2.43×1017 kg buzzes the Earth at a speed of 11500 mph.

K=_______J

Answer 1