Задача 10443.

A person standing on a smooth surface of ice throws a stone of mass 2 kg in a horizontal direction from a height of 1.5 m. The stone falls on the ice at a distance of 10 m from the point of throwing. Determine how far a person will roll back if the coefficient of friction of skates on ice is 0.05. The mass of a person is 70 kg.

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