Задача id12672

A bullet with mass m = 10 g flies up to the board with a speed of vo = 600 m/sec and, having pierced it in the center, flies out with a speed of v = 400 m/sec. Determine how much of the lost kinetic energy of the bullet went to the kinetic energy of the board and how much was released in the form of heat. Board mass M = 1 kg.

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