Step 1: Conservation of momentum in explosion.
In an explosion, the total momentum of the system is conserved. If a body breaks into parts of unequal masses, the momentum of each part depends on its mass and velocity.
Step 2: Kinetic energy and mass relationship.
Kinetic energy \( K \) is given by:
\[
K = \frac{1}{2} m v^2
\]
where \( m \) is the mass and \( v \) is the velocity of the part. For unequal masses, the velocities of the parts may differ, but they will have equal kinetic energy.
Step 3: Conclusion.
Thus, the explosion ensures that both parts will have equal kinetic energy, despite having unequal masses and velocities.