Concept:An explosion is a dramatic event driven entirely by internal forces within a closed system.
Solution:- Because no external forces act on the bomb at the exact instant of explosion, the total vector momentum of the system must remain constant.
- A stationary bomb (zero momentum) will explode into fragments that fly off in all directions. The vector sum of all fragment momentums mathematically cancels out to exactly zero.
- This makes explosions a classic demonstration of the Law of Conservation of Linear Momentum.
Why other options are incorrect:Kinetic energy massively
increases during an explosion (converting chemical potential to kinetic), making "energy conservation" a tricky descriptor for kinematic modeling here. Third law applies to specific pair fragments, but momentum conservation governs the entire system.
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