The generalized kind of this corresponds to any degree of freedom of a system in Hamiltonian  mechanics.
The generalized kind of this corresponds to any degree of freedom of a system in Hamiltonian  mechanics. In special relativity it is made into a 4-vector by setting the time component equal to energy.  According to Newton's second law, the negative gradient of the potential is equal to the time derivative of this quantity. During all collisions this quantity is conserved. FTP, identify this vector described by Newton as the "quantity of motion" that is classically the product of the mass and velocity.
The generalized kind of this corresponds to any degree of freedom of a system in Hamiltonian  mechanics.
{momentum} (prompt on “p” or “quantity of motion”)