Two identical particles, each of mass 1,410 kg, are drifting in free space along the same path, one directly in front of the other one. At one instant, their separation distance is 18.0 m, and the particles have the same velocity of 850î m/s. What are the velocities (in m/s) of the particles when they are 4.00 m apart? leading particle v = (850 + î m/s trailing particle 850 + Jî m/s

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