Задача 10038.

Skater standing on ice, throws a stone along the ice mass of m = 0,5 kg. During the time t = 2 with a stone passed before stopping distance s = 20 m. What is the speed after throwing stones begin to move a skater, if its mass M = 60 kg?

Detailed solution shorthand terms, formulas, laws used in the decision, the withdrawal of the calculation formula and the response.