Question

why is kinetic energy not conserved in explosions? What is the source of the energy gained?

Answer 1

We know that energy can neither be created, nor destroyed. But it can get transformed from one form to another. Thus, the total energy is always conserved. In an explosion, all of the energy doesn't get converted into kinetic energy, rather, some of the energy is released as non-conservative ones such as in the form of heat, in breaking the chemical bonds, and in deforming the shape of the body.Thus, kinetic energy is, clearly, not conserved. The source of the energy gained is the potential energy which the system possesses before collision. It gets transformed into different other forms.