👉 A term that refers to a situation where there is no tension or strain between two or more objects, and they are in equilibrium. In other words, if one object is at rest and another is moving with constant speed, then the total momentum of both objects will be zero. This concept is often used in physics to describe situations in which all forces acting on an object are balanced by a force that is perpendicular to the motion. For example, consider two cars driving towards each other on a straight road
