The time rate of change in this quantity is equal to a particle's net force according to Newton's second law.
The cross product of this quantity's vector with the L vector, minus "mass times k times r-hat," gives the Laplace- Runge-Lenz vector. One law governing this quantity is a consequence of the Lagrangian's translational invariance. The time rate of change in this quantity is equal to a particle's net force according to Newton's second law. Taking Planck's constant over this quantity gives a particle's de Broglie wavelength. Like all closed systems, both inelastic and elastic collisions conserve this quantity. For 10 points, name this quantity that equals mass times velocity.
The cross product of this quantity's vector with the L vector, minus "mass times
linear momentum [do not accept “angular momentum”]