Question

A boy of mass 60 kg is standing over a platform of mass 40 kg placed over a smooth horizontal surface.He Throws a stone of mass 1 kg with velocity v= 10m/s at an angle of 45° with respect to ground. Find displacement of the platform (with boy) on the surface when the stone lands on the ground.(g=10m/s^2)

Answer 1

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this is the question of which class