In Fahrenheit 451 Bradbury describes the hound as

In Fahrenheit 451, the mechanical hound is a dog-shaped robot with eight legs. It is made of metal. It's purpose is to hunt down and kill fugitives, who have violated the law of the society.

Explanation:

the boy's acceleration toward the girl is 2.08 m/s^2.

explanation:

according the newton's third law, the force causing the girl accelerate towards the boy will be me with equal counter-force causing the boy to accelerate towards the girl. these forces will be of equal magnitude and allows us to determine the boy's acceleration:

the boy's acceleration toward the girl is 2.08 m/s^2.

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