8.3 .. (a) Show that the kinetic energy K and the momentummagnitude p of a particle with mass m are related by(b) A 0.040-kg cardinal (Richmondena cardinalis) and a 0.145-kgbaseball have the same kinetic energy. Which has the greater magnitudeof momentum? What is the ratio of the cardinal’s magnitudeof momentum to the baseball’s? (c) A 700-N man and a 450-Nwoman have the same momentum. Who has the greater kineticenergy? What is the ratio of the man’s kinetic energy to that of thewoman?8.4 . Two vehicles are approaching
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