Problem 3 [25 Hts]; Three blocks are placed on a frictionless surface, with blocks of masses m2 and ms being initially at rest. Block 1 is moving with a velocity of w; = 10 m/s. It then collides with a block 2 (left gure}, which then collides with block 3 (right gure). The third block has mass m3 = 6 kg. After the second collision, block 2 becomes stationary again, while block 3 has the velocity of WT = 5 m/s. Assuming all collisions to be elastic, find the nal velocity Viff block 1 (m/s, round to 1 decimal place). Collision between blocks 1-2 (left) and 2-3 (right)