Задача id10291

A skater rolled a loaded sled across the ice at a speed of 5 m/s, then pushed it forward and released it. At what speed (in cm/s) will the skater roll immediately after the push if the speed of the sled increases to 8 m/s? The mass of the sled is 90 kg, the mass of the person is 60 kg. In your answer, indicate the speed module.

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