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1. A cardinal (Richmondena cardinalis) of mass 4.40×10−2 kg and a baseball of mass 0.147 kg...

1. A cardinal (Richmondena cardinalis) of mass 4.40×10−2 kg and a baseball of mass 0.147 kg have the same kinetic energy. What is the ratio of the cardinal's magnitude pc of momentum to the magnitude pb of the baseball's momentum?

2. A man weighing 710 N and a woman weighing 460 N have the same momentum. What is the ratio of the man's kinetic energy Km to that of the woman Kw?

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Answer #1

Mc = 4.408 102 kg Mo = 0.147 kg kc = kb We know that momentum = mv = 12 MK 4.40 X 10-2 0.147 z - 0.647) 0.547 Wm = 7ION Ww =

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