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According to a seated woman, a 69.6-kg man runs with his 33.6-kg dog toward a 20.6-kg child who is running toward the man. The man

According to a seated woman, a 69.6-kg man runs with his 33.6-kg dog toward a 20.6-kg child who is running toward the man. The man and dog's speed is 3.40 km/h, and the child's speed is 1.20 km/h.

(a) According to the woman, what is the kinetic energy of the man-dog-child system? (b) According to the man, what is the kinetic energy of the man-dog-child system?

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