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In classical mechanics , linear momentum, translational momentum, or simply momentum ( pl. momenta; pl.SI unit kg   m/s is the product of the m/smass and m/smassvelocity of an object, quantified in kilogram-meters per second . It is dimensionally equivalent to impulse , the product of impulseforce and impulseforcetime , quantified in impulseforcetimenewton-second s. impulseforcetimenewton-secondNewton's second law of motion states that the change in linear momentum of a body... read more


p = (p^0 , p^1 , p^2 , p^3 ) = \left({E \over c} , p_x , p_y , p_z\right). The quantity of above is ordinary non-relativistic momentum of the particle and its non-relativistic momentumrest mass . The four-momentum is useful in relativistic calculations because it is a Lorentz vector. This means that it is easy to keep track of how it transforms under non-relativistic momentumrest massLorentz transformation s.The above definition applies under the coordinate convention that . Some authors use... read more

Angular momentum

In , angular momentum (rarely, moment of momentum or rotational momentum) is the rotational analog of . It is an important quantity in physics because it is a – the angular momentum of a system remains constant unless acted on by an external .The definition of angular momentum for a is a r×p, the of the particle's r (relative to some origin) and its p = ''m''v. This definition can be applied to each point in like solids or fluids, or . Unlike momentum, angular momentum does depend on where... read more

Momentum Deferred

"Momentum Deferred" is the fourth episode of the second season of the American science fiction drama television series ''Fringe''. Screenwriters Zack Stentz and Ashley Edward Miller wrote the episode, and co-executive producer Joe Chappelle directed it. The episode followed the theft of cryogenically-frozen heads by shapeshifters from the parallel universe in their search for a specific head, while the Fringe team attempts to prevent this. Meanwhile, Olivia struggles to remember her conversation... read more

Unstoppable Momentum

''Unstoppable Momentum'' is the fourteenth studio album by guitarist Joe Satriani, released on May 7, 2013 through Epic Records. The album reached No. 42 on the U.S. ''Billboard'' 200. ''AllMusic''. All Media Network. Retrieved 2014-02-07. and remained on that chart for three weeks,. ''Billboard''. Retrieved 2014-03-18. as well as reaching the top 100 in nine other countries.. ''finnishcharts.com''. Hung Medien. Retrieved 2014-02-07.==Release and tour==Recording for ''Unstoppable Momentum'' took... read more

Representational momentum

Representational momentum is a small, but reliable, error in our visual perception of moving objects. Instead of knowing the exact location of a moving object, we actually think it is a bit further along its trajectory. For example, people viewing an object moving from left to right that suddenly disappears will report they saw it a bit further to the right than where it actually vanished. While not a big error, it has been found in a variety of different events ranging from simple rotations to... read more

Mission Momentum

The Mission Momentum are a professional roller hockey team from southern California, which competes in the NARCh Pro tournament series. They were formed in 2009 and are based out of Irvine, California.==External links==Category:North American Roller Hockey Championships teams read more

Momentum (EP)

''Momentum'' is the first EP by American rapper Stevie Stone. The EP was released on October 23, 2012, by Strange Music. The album features guest appearances from Kutt Calhoun and Spaide Ripper. The album debuted at number 196 on the ''Billboard'' 200 chart.==Commercial performance==The album debuted at number 196 on the ''Billboard'' 200 chart, with first-week sales of 2,400 copies in the United States. read more

Momentum Adventure

Momentum Adventure is a company that specialises in adventure holidays. It was founded by Mathew Robertson in 2005.==History==Momentum Adventure was founded in 2005 by Matthew Robertson who said that he wanted to add an "element of velvet lining" to adventure travel. == Operations==Momentum guides are all experts in their field and hold the highest IFMGA accreditation. They include Johan Aregard, a former Swedish Special Forces soldier, Dave Pearce, a former Royal Marine & survival consultant for... read more

Population momentum

Population momentum refers to population growth at the national level that would occur even if levels of childbearing immediately declined to replacement level.Preston, Heuveline, and Guillot (2001) Demography: Measuring and Modeling Population Processes For countries with above-replacement fertility (greater than 2.1 children per woman), population momentum represents natural increase to the population. For below-replacement countries, momentum corresponds to continued population decline.Momentum... read more

Momentum diffusion

Momentum diffusion most commonly refers to the diffusion, or spread of momentum between particles (atoms or molecules) of matter, often in the fluid state.This transport of momentum can occur in any direction of the fluid flow. Momentum diffusion can be attributed to either external pressure or shear stress or both.== Diffusion due to pressure ==When pressure is applied on an incompressible fluid the velocity of the fluid will change. The fluid accelerates or deccelerates depending on the relative... read more

Momentum transfer

In particle physics, wave mechanics and optics, momentum transfer is the amount of momentum that one particle gives to another particle.In the simplest example of scattering of two colliding particles with initial momenta \vec{p}_{i1},\vec{p}_{i2}, resulting in final momenta \vec{p}_{f1},\vec{p}_{f2}, the momentum transfer is given by==Wave mechanics and optics==A wave has a momentum p = \hbar k and is a vectorial quantity. The difference of the momentum of the scattered wave to the incident wave... read more

Momentum investing

Momentum investing is a system of buying stocks or other securities that have had high returns over the past three to twelve months, and selling those that have had poor returns over the same period. It has been reported that this strategy gives average returns of 1% per month for the following 3–12 months as shown by Narasimhan Jegadeesh and Sheridan Titman.While no consensus exists about the validity of this claim, economists have trouble reconciling this phenomenon, using the efficient-market... read more

Re:Mix Momentum

''Re:Mix Momentum'' is the second album and first remix album released by Christian artist TobyMac. ''Re:Mix Momentum'' contains remixes of ten of the songs on ''Momentum'' (2001). It was released on June 12, 2003, through ForeFront Records. read more

Momentum theory

An actuator disk accelerating a fluid flow from right to leftIn fluid dynamics, the momentum theory or disk actuator theory is a theory describing a mathematical model of an ideal actuator disk, such as a propeller or helicopter rotor, by W.J.M. Rankine (1865), Alfred George Greenhill (1888) and R.E. Froude (1889).The rotor is modeled as an infinitely thin disc, inducing a constant velocity along the axis of rotation. The basic state of a helicopter is hovering. This disc creates a flow around the... read more


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