An explosion is initially moving to the right. After the explosion, the bomb breaks into two pieces, m1 and m2. what is the initial velocith of the intact bomb before the explosion given the final velocities of m1 and m2.

initial: m1=4.0 kg. m2= 3.0kg. v=?

final: v1 = -5.0m/s. v2= 12m/s