That's not a child's weight—it's a force measurement. The arrow pointing down shows 1000N (newtons), which is about 102kg worth of force due to gravity. Someone clearly skipped physics class and went straight to calling Child Protective Services. Next time you see a "heavy child" in a textbook diagram, remember they're just trying to teach you F = ma without the trauma of dropping actual children.
Newton's Law Of Misinterpretation

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