Find the kinetic energy of the objects in the scenarios.A. A cosmic pion of mass 140 MeV/?2140 MeV/c2 flies through outer space at a speed of 9.61×103 km/s9.61×103 km/s. See the hint for help converting MeV/?2MeV/c2 to kg. K =B. A cheetah weighing 375 N chases a gazelle at a speed of 34.9 m/s.K =JC. A truck weighing 3.84 short tons speeds down the road at 66.6 mph.K =JD. An asteroid of mass 2.57 x 1017 kg buzzes the Earth at a speed of 10300 mph.K =J

A.Mass of pion:mπ=140 MeV/c2=140×106×1.6×10-19(3×108)2=2.49×10-28 kgSpeed, v=9.81×103 km/s=9.81×106…

Answered: . A cheetah weighing 375 N chases a…

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. A cheetah weighing 375 N chases a gazelle at a speed of 34.9 m/s.

Glencoe Physics: Principles and Problems, Student Edition

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ISBN:9780078807213

Author:Paul W. Zitzewitz

Publisher:Paul W. Zitzewitz

Chapter9: Momentum And Its Conservation

Section: Chapter Questions

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Concept explainers

Relativistic Energy and Momentum

According to classical physics, time flow is the same for every observer. But according to einstein's theory, time flow is different for different observers. The idea that time flow is not the same for all may sound strange because we may not experience this effect in everyday life. This effect is only observed when an object moves with some velocity comparable to the velocity of light. This velocity is termed relativistic velocity.

Question

Find the kinetic energy of the objects in the scenarios.

A. A cosmic pion of mass 140 MeV/?2140 MeV/c2 flies through outer space at a speed of 9.61×103 km/s9.61×103 km/s. See the hint for help converting MeV/?2MeV/c2 to kg.

K =
B. A cheetah weighing 375 N chases a gazelle at a speed of 34.9 m/s.
K =
J
C. A truck weighing 3.84 short tons speeds down the road at 66.6 mph.
K =
J
D. An asteroid of mass 2.57 x 1017 kg buzzes the Earth at a speed of 10300 mph.
K =
J

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