Under what condition does a ball hitting another body rebound from it with practically no loss of kinetic energy? What impulse does the body receive?

Question

Physics

Under what condition does a ball hitting another body rebound from it with practically no loss of kinetic energy? What impulse does the body receive?

Answer 1

The first condition is the absolute elasticity of impact. Abstraction, of course, but applicable in reality.
The second condition is an incomparably greater mass of the "other body" compared to the test one.
For example, take a basketball bouncing off the wall of a house.
Under these conditions, the momentum of the body (ball) is preserved, only its direction changes.
With comparable masses of bodies, only the sum of their momenta (and energies) is preserved.
The change in the momentum modulus of each of the bodies depends on the ratio of their masses.
In an inelastic collision, part of the kinetic energy is converted into heat.