what is elastic and inelastic collision what is elastic and inelastic collision what is elastic and inelastic collision

No loss in energy due to collision is for elastic collision.

But there will be a loss during collision in case of in-elastic collision.

So KE will remain constant before and after collision in case of elastic collision.

Elastic collision transfers more energy into motion while inelastic transfers energy into deformation of the objects. Elastic could be called more efficient transfer.

In an elastic collision, no kinetic energy is lost, and the relative speed of separation of the objects after the collision is the same as the relative speed before the collision. In an inelastic collision, part of the elastic energy is lost, and the relative speed after the collision is less.

That's called an "elastic collision".