Задача id12685

A cannon is fired vertically upward. The initial velocity of the projectile is vo. At the point of maximum lift, the projectile exploded into two identical parts. The first of them fell to the ground near the point of the shot, having a speed of 2vo. How long after the shot will the second half fall to the ground? What speed will it have at the moment of falling? Neglect air resistance.

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