I need to show how to get v1f and v2f from equation 1 and 2 please.

mi vie to = mivif + mavet each block after collision . Collision is Elastic, Kit is Conservered mi vic = Lom, v3 if + 2 vet 2 using 1 * we have, Vif = (m, - mz ) vi 5- 10 x 9-9 = - 3-3 -mused m, +me 5+ 10 2 = 2 my/i 2 *5 x 9. 9 - 6.6 m/sec mit mel (5+ 10 )