· To understand the physical meaning of linear momentum as a magnitude that measures the capacity to act on another in collisions (movements in one dimension).

· To understand the relation between impulse (of a constant force) and linear momentum, in addition to the conservation of linear momentum in the absence of an external impulse.

· To understand the notion of elastic and inelastic collisions.

·To apply the principle of conservation of linear momentum to the calculus of velocities or masses that collide in elastic and inelastic collisions in one dimension.

· To qualitatively understand the changes of direction produced when collisions are not frontal.

· To apply the principle of conservation of linear momentum to the calculus of velocities or masses of particles in the case of the disintegration of a body into two or three fragments.