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Definitions of momentum
  1. noun
    an impelling force or strength
    "the car's momentum carried it off the road"

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  2. noun
    the product of a body's mass and its velocity
    "the momentum of the particles was deduced from meteoritic velocities"
Definition that contains momentum
  • transport an exchange of molecules (and their kinetic energy and momentum) across the boundary between adjacent layers of a fluid or across cell membranes
  • ballistic relating to or characteristic of the motion of objects moving under their own momentum and the force of gravity
  • deaden lessen the momentum or velocity of
  • self-propelling moved forward by its own force or momentum
  • conservation of momentum the principle that the total linear momentum in a closed system is constant and is not affected by processes occurring inside the system
  • quasiparticle a quantum of energy (in a crystal lattice or other system) that has position and momentum and can in some respects be regarded as a particle
  • indeterminacy principle (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
  • reaction propulsion propulsion that results from the ejection at high velocity of a mass of gas to which the vehicle reacts with an equal and opposite momentum
  • uncertainty principle (quantum theory) the theory that it is impossible to measure both energy and time (or position and momentum) completely accurately at the same time
  • self-propelled moved forward by its own force or momentum
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