The time component of the
The time component of the four-vector form of this quantity represents energy, while generalized forms of it are conjugate to position variables in Hamiltonian and Lagrangian mechanics. For a photon, the magnitude of this quantity is equal to h-bar times the wavenumber, while a change in this quantity due to a (*) force is called impulse. It is equal to zero in a center-of-mass frame, and one form of Newton's second law states that force is the time derivative of this quantity. Conserved, unlike kinetic energy, in both elastic and inelastic collisions, for 10 points, name this physical quantity equal to an object's mass times its velocity.
The time component of the four-vector form of this quantity represents energy, while generalized forms of it are conjugate to position variables in Hamiltonian and Lagrangian mechanics.
linear {momentum} [do not accept "angular momentum", accept "relativistic momentum" before "generalized"]