Final answer:
Elastic interactions occur when objects bounce off each other, while inelastic interactions occur when objects stick together after collision. Elastic collisions are easier to analyze and can be verified mathematically, while inelastic collisions require momentum conservation equations.
Step-by-step explanation:
In physics, an elastic interaction occurs when objects collide and bounce off each other, separating after the collision. In contrast, an inelastic interaction occurs when objects collide and stick together, remaining connected after the collision.
An example of an elastic interaction is when two billiard balls collide and bounce off each other in opposite directions. An example of an inelastic interaction is when two objects, such as clay balls, collide and stick together.
It is generally easier to analyze an elastic collision because the conservation of kinetic energy can be used to solve the problem mathematically. Inelastic collisions, on the other hand, require the use of momentum conservation equations to analyze the interaction. Both methods can be used to verify the relationship, but inelastic collisions may require additional calculations.