Two particles at the time t = 0 simultaneously move along the X axis in such a way that their radius vectors change with time according to the laws: r₁ = 2t²i; r₂ = (20-3t) j. Find: a) the radius vector r₀ of the particle meeting point; b) the velocities V₁ and V₂ of the particles at the moment of the encounter.

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