Two blocks are travelling with constant velocities, Vi-5m/s and V2--4m/s, in horizontal frictionless plane as seen in figure. Mass of the blocks, ml and m2 are 6kg and 8kg respectively. At t-0, distance between the blocks, d, is 2 meter. At a certain time, they collide elastically with each other. Find the distance between the blocks at t-1. V1 V2 d m1 m2 A) 2 m B) 3 m C) 5m D) 7m E) 9m Your answer