If one large particle splits into two

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In summary, the terms "elastic" or "inelastic" in terms of momentum refer to whether or not the energy is conserved in a collision. However, in the case of a decay, these terms are ill-defined as there is no collision involved.
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kimsworld
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If one large particle splits into two is that inelastic or elastic in terms of momentum?
 
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I don't know what you mean by "inelastic or elastic in terms of momentum". A collision (and we can think of this as the two parts of the particle as two objects colliding) is "elastic" or "inelastic" if the energy is conserved or not conserved.
 
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Both elastic and inelastic processes conserve momentum. Momentum is always conserved. Whether a collision is elastic or inelastic depends on conservation of kinetic energy. If kinetic energy is conserved, then the collision is elastic.

In the case of a decay, there's no collision, so the term elastic versus inelastic is a ill-defined. But the kinetic energy of the particle in its rest frame will go from 0 to some non-zero value for the decay particles.
 
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1. What is the process of one large particle splitting into two called?

The process of one large particle splitting into two is called fission.

2. What types of particles can undergo fission?

Generally, only large, unstable particles such as atoms with a high atomic number can undergo fission. These particles are known as fissile materials.

3. What type of energy is released during fission?

Nuclear fission releases a significant amount of energy in the form of heat and radiation.

4. Can fission occur naturally?

Yes, fission can occur naturally in certain radioactive materials such as uranium and plutonium. However, it is typically induced in controlled environments for energy production.

5. What are the potential dangers of fission?

Fission can produce highly radioactive byproducts that can be harmful to living organisms if not properly contained. It also has the potential to cause nuclear accidents and can be used to create nuclear weapons.

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