Task id4916
A platform with sand with a total mass of M = 2t stands on rails on a horizontal section of the track. A projectile with mass m = 8 kg hits the sand and gets stuck in it. Neglecting friction, determine at what speed the platform will move if at the moment of impact the projectile speed is v = 450 m/s, and its direction is from top to bottom at an angle α = 30° to the horizon.
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