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momentum    音标拼音: [mom'ɛntəm]
n. 动力,要素

动力,要素

momentum
动量

momentum
n 1: an impelling force or strength; "the car's momentum carried
it off the road" [synonym: {momentum}, {impulse}]
2: the product of a body's mass and its velocity; "the momentum
of the particles was deduced from meteoritic velocities"

Momentum \Mo*men"tum\, n.; pl. L. {Momenta}, F. {Momentums}. [L.
See {Moment}.]
1. (Mech.) The quantity of motion in a moving body, being
always proportioned to the quantity of matter multiplied
by the velocity; impetus.
[1913 Webster]

2. Essential element, or constituent element.
[1913 Webster]

I shall state the several momenta of the distinction
in separate propositions. --Sir W.
Hamilton.
[1913 Webster]

3. A property of an activity or course of events, viewed as
analogous to forward motion or to physical momentum (def.
1), such that the activity is believed to be able to
continue moving forward without further application of
force or effort; -- often used to describe an increase in
the acquisition of public support for a purpose; as, as,
the petition drive gained momentum when it was mentioned
in the newspapers.
[PJC]

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  • Momentum - Wikipedia
    In Newtonian mechanics, momentum (pl : momenta or momentums; more specifically linear momentum or translational momentum) is the product of the mass and velocity of an object
  • Momentum in Physics – Definition, Formula, Examples
    Learn about momentum in physics Get its definition, units, formula, and worked example problems See how it relates to Newton's laws
  • Conservation of momentum | Definition, Examples, Facts | Britannica
    Conservation of momentum, general law of physics according to which the quantity called momentum that characterizes motion never changes in an isolated collection of objects; that is, the total momentum of a system remains constant Momentum is equal to the mass of an object multiplied by its velocity
  • Momentum - The Physics Classroom
    Objects that are moving possess momentum The amount of momentum possessed by the object depends upon how much mass is moving and how fast the mass is moving (speed)
  • Momentum - Math is Fun
    Momentum is how much something wants to keep it's current motion This truck would be hard to stop it has a lot of momentum
  • Momentum - HyperPhysics
    Momentum The momentum of a particle is defined as the product of its mass times its velocity It is a vector quantity The momentum of a system is the vector sum of the momenta of the objects which make up the system
  • Momentum - Learn Physics
    Momentum in physics, definitions, formulas, examples, impulse, Newton’s second law, and conservation of momentum explained simply
  • MOMENTUM Definition Meaning - Merriam-Webster
    The meaning of MOMENTUM is a property of a moving body that the body has by virtue of its mass and motion and that is equal to the product of the body's mass and velocity; broadly : a property of a moving body that determines the length of time required to bring it to rest when under the action of a constant force or moment
  • Momentum and Its Conservation - The Physics Classroom
    Lesson 2 - The Law of Momentum Conservation The Law of Action-Reaction (Revisited) Momentum Conservation Principle Isolated Systems Using Equations as a "Recipe" for Algebraic Problem-Solving Using Equations as a Guide to Thinking Momentum Conservation in Explosions Lesson 3 - Collisions in Two Dimensions Momentum Conservation Times Two
  • Momentum | Definition, Examples, Facts | Britannica
    Momentum, product of the mass of a particle and its velocity Momentum is a vector quantity; i e , it has both magnitude and direction Isaac Newton’s second law of motion states that the time rate of change of momentum is equal to the force acting on the particle





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