Задача 11018.

A shell weighing 50 kg, flying at a speed of 800 m / s, falls into a stationary platform with sand at an angle of 30 ° to the vertical and gets stuck in the sand. Find the speed of the platform after hitting the projectile, if its mass is 16 tons.

A detailed solution with a brief description of the condition, formulas and laws used in the solution, the derivation of the formula and the answer.
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