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In an elastic collision both **kinetic energy** and momentum are conserved. In a completely elastic collision **kinetic energy** is conseved. We must remember the assumptions : It is a perfectly elastic collision which conserves **kinetic energy**. In an elastic collision the **kinetic energy** is conserved: the initial **kinetic energy** of the system is equal to the final kinetic energy.

I like to share this Enthalpy Units with you all through my article.

In in elastic collisions some of the kinetic energy is converted to heat and sound. **Elastic collision in which both kinetic energy and momentum of the system are conserved**.

A perfectly elastic collision is defined as one in which there is no loss of **kinetic energy** in the collision. An elastic collision still conserves **kinetic energy** and, of course, any collision conserves linear momentum. Since kineticenergy and momentum is conserved in an elastic collision, Note that theinteratomic forces / potential do not enter in this expression. **Kinetic energy** is lost during an inelastic collision.

THEORY

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1.) A perfectly elastic collision is one in which none of the initial momentum or **kinetic energy** is lost during the collision. An elastic collision conserves **kinetic energy** (the energy of motion) all the **kinetic energy** of the objects remains as **kinetic energy** after the collision.

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**Completely inelastic collisions**: In completely inelastic collisions, the objects stick together after the collision.

(a)If colliding objects stick to each other after the collision, the collision is inelastic; otherwise, it is elastic. In a collision when the two objects stick, that defines a totally inelastic collision. Completely inelastic collisions occur when the colliding objects stick together.

Physics is widely used in day to day activities watch out for my forthcoming posts on Physics Equation for Work and physics distance formula. I am sure they will be helpful.

A: No, when two objects stick together and move as one body after the collision it is called a completely INELASTIC collision. A perfectly inelastic collision, on theother hand, is one in which the objects stick together after colliding.An a value of zero is a perfectly inelastic collision, in which the two colliding objects stick together after colliding. In a totally inelastic collision, the two objects stick together after the collision,so that .