Задача 31647.

The man of mass m1 = 55 kg, standing on one end of the originally stationary cart of masses m2 = 120 kg and length l = 4.5 m, jumps at a speed V relative to the ground at an angle of a to the horizon and hits the other end of the trolley. Mass of the wheels, as well as the forces of resistance to the movement of the trolley is not taken into account. The angle a is 25 °. Determine the velocity v.

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