Question -
Answer -
Let┬аm,┬аm1,and┬аm2┬аbe the respective masses of the parentnucleus and the two daughter nuclei. The parent nucleus is at rest.
Initialmomentum of the system (parent nucleus) = 0
Let┬аv1┬аand┬аv2┬аbethe respective velocities of the daughter nuclei having masses┬аm1┬аand┬аm2.
Totallinear momentum of the system after disintegration =┬а
Accordingto the law of conservation of momentum:
Totalinitial momentum = Total final momentum
Here,the negative sign indicates that the fragments of the parent nucleus move indirections opposite to each other.