Linear momentum refers to the quantity of motion possessed by an object. It is calculated by multiplying an object's mass (m) by its velocity (v).
Impulse is defined as the change in linear momentum of an object. It can be calculated by multiplying force and time.
This principle states that in a closed system, where no external forces act on objects, the total linear momentum remains constant.
An elastic collision occurs when two objects collide and bounce off each other without any loss of kinetic energy.