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In Newtonian mechanics, linear momentum, translational momentum, or momentum is the product of the mass and velocity of an object. It is a vector quantity, possessing a direction. If m is an object's mass and v is its velocity the object’s momentum is: p = m v. In SI units, momentum is measured in kilogram meters per second. Newton's second law of motion states that a body's rate of change in momentum is equal to the net force acting on it. Momentum depends on the frame of reference, but in any inertial frame it is a conserved quantity, meaning that if a closed system is not affected by external forces, its total linear momentum does not change. Momentum is conserved in special relativity and, in a modified form, in electrodynamics, quantum mechanics, quantum field theory, general relativity, it is an expression of one of the fundamental symmetries of time: translational symmetry. Advanced formulations of classical mechanics and Hamiltonian mechanics, allow one to choose coordinate systems that incorporate symmetries and constraints.

In these systems the conserved quantity is generalized momentum, in general this is different from the kinetic momentum defined above. The concept of generalized momentum is carried over into quantum mechanics, where it becomes an operator on a wave function; the momentum and position operators are related by the Heisenberg uncertainty principle. In continuous systems such as electromagnetic fields and deformable bodies, a momentum density can be defined, a continuum version of the conservation of momentum leads to equations such as the Navier–Stokes equations for fluids or the Cauchy momentum equation for deformable solids or fluids. Momentum is a vector quantity: it has both magnitude and direction. Since momentum has a direction, it can be used to predict the resulting direction and speed of motion of objects after they collide. Below, the basic properties of momentum are described in one dimension; the vector equations are identical to the scalar equations. The momentum of a particle is conventionally represented by the letter p.

It is the product of two quantities, the particle's mass and its velocity: p = m v. The unit of momentum is the product of the units of velocity. In SI units, if the mass is in kilograms and the velocity is in meters per second the momentum is in kilogram meters per second. In cgs units, if the mass is in grams and the velocity in centimeters per second the momentum is in gram centimeters per second. Being a vector, momentum has direction. For example, a 1 kg model airplane, traveling due north at 1 m/s in straight and level flight, has a momentum of 1 kg⋅m/s due north measured with reference to the ground; the momentum of a system of particles is the vector sum of their momenta. If two particles have respective masses m1 and m2, velocities v1 and v2, the total momentum is p = p 1 + p 2 = m 1 v 1 + m 2 v 2; the momenta of more than two particles can be added more with the following: p = ∑ i m i v i. A system of particles has a center of mass, a point determined by the weighted sum of their positions: r cm = m 1 r 1 + m 2 r 2 + ⋯ m 1 + m 2 + ⋯ = ∑ i m i r i ∑ i m i.

If one or more of the particles is moving, the center of mass of the system will be moving as well. If the total mass of the particles is m, the center of mass is moving at velocity vcm, the momentum of the system is: p = m v cm; this is known as Euler's first law. If the net force F applied to a particle is constant, is applied for a time interval Δt, the momentum of the particle changes by an amount Δ p = F Δ t. In differential form, this is Newton's second law. If the net force experienced by a particle changes as a function of time, F, the change in momentum between times t1 and t2 is

Tadej Pogańćar

Tadej Pogačar is a Slovenian cyclist, who rides for UCI WorldTeam UAE Team Emirates. In 2019 he extended his contract with UAE Team Emirates at least until the end of 2023 season. In August 2019, he was put on the startlist for the 2019 Vuelta a España, he won two stages in the 2nd week of the Vuelta and was in a high overall position going into the 3rd week. However, in the final week Nairo Quintana and Miguel Ángel López rode well and in the process jumped him in the standings, knocking him off the podium, he took his 3rd stage win in a 40-kilometre solo breakaway on the penultimate stage and gained enough time over his opponents to take over the Young Rider Jersey and climb back into the final podium position before the last stage in Madrid. He is slated to be on the start list for the 2020 Tour de France and has said he will go into the race with the same mindset he had going into the 2019 Vuelta. "If Aru feels good we'll go for the Yellow Jersey and I'll support him 100%". Tadej Pogačar at ProCyclingStats

UAB Blazers men's basketball

The UAB Blazers men's basketball team represents the University of Alabama at Birmingham in the NCAA Division I men's college basketball, have competed in Conference USA since 1995. The UAB Blazers started their athletics program with the creation of men's basketball in 1978. Setting high standards from the start, UAB was able to lure Gene Bartow away from his post as the head coach at UCLA to start the Blazer program. Known as the "Father of UAB athletics," Coach Bartow was able to guide the Blazers to early success by reaching the NCAA tournament in just their third season of existence. Since their inaugural season, the Blazers have made 15 appearances in the NCAA Men's Basketball Tournament, 12 appearances in the National Invitational Tournament. UAB has been productive in its NCAA tournament appearances, reaching the Elite Eight once, the Sweet Sixteen 3 times. After 40 years of basketball, UAB has had 36 winning seasons, including 24 seasons with at least 20 wins. UAB's win percentage ranks 30th among NCAA Division I basketball programs with at least 40 seasons.

UAB's basketball program has featured wins over many of basketball's most historic programs, including Kentucky, North Carolina, Louisville, Arizona, Michigan State, Villanova and many others. 1978–79, NCAA D-I Independent 1979–91, Sun Belt Conference 1991–95, Great Midwest Conference 1995–present, Conference USA The Blazers have appeared in the College Basketball Invitational one time. Their record is 0–1 UAB has retired four jerseys since its inception and they now hang from the rafters of Bartow Arena; this honor is bestowed only on players who earn AP All-America honors and who complete their degree at UAB. UAB has seen numerous players move on to professional careers in the NBA; some of UAB's highest NBA draft picks include: Oliver Robinson to the San Antonio Spurs Walter Sharpe to the Seattle SuperSonics Steve Mitchell to the Washington Bullets Robert Vaden to the Charlotte BobcatsOther former Blazers to play in the NBA are: McKinley Singleton Alan Ogg Stanley Jackson Donell Taylor Carldell "Squeaky" Johnson Elijah Millsap UAB played their home games at the BJCC Coliseum, but moved their home games to an on-campus facility starting with the 1988–89 season.

Known as UAB Arena, the name was changed to Bartow Arena on January 25, 1997. The 8,508-seat arena is named after Coach Gene Bartow, the man who built UAB's men's basketball program from scratch starting in 1978. Official website

List of concrete and visual poets

Below is a partial list of Concrete poets and Visual poets with article written, where appropriate, from around the world. Dead links are in red and located on the Talk Page. Guy Bleus Eduardo Kac Augusto de Campos Haroldo de Campos Décio Pignatari Philadelpho Menezes Julie Clarke Jas H. Duke Tim Gaze Peter Murphy Pi O Amanda Stewart Richard Tipping Friedrich Achleitner H. C. Artmann Ernst Jandl Tamar Boyadjian David Aylward Gary Barwin Shaunt Basmajian Derek Beaulieu bill bissett Judith Copithorne Paul Dutton Helen Hajnoczky Paul Hartal Lionel Kearns Camille Martin Steve McCaffery bpNichol Angela Rawlings David UU Jim Andrews Ted Warnell Edwin Varney Bohumila Grögerová Václav Havel Josef Hiršal Emil Juliš Jiri Kolar Eduard Ovčáček Paula Claire Bob Cobbing Ian Hamilton Finlay Alan Halsey Dom Sylvester Houédard Geraldine Monk Tom Phillips Stephen Bann Pierre Albert-Birot Isidore Isou Julien Blaine Max Bense Reinhard Döhl Helmut Heißenbüttel Dieter Roth Costis Rod Summers David Avidan Francesco Aprile Mirella Bentivoglio Nanni Balestrini Federico Federici Marco Giovenale Ketty La Rocca Leoncillo Eugenio Miccini Maurizio Nannucci Enzo Patti Lamberto Pignotti Adriano Spatola Arrigo Lora Totino Seiichi Niikuni Katué Kitasono Adel Fakhoury Penpen Bugtong Takipsilim Marianna Bocian Marzenna Kosińska Zbigniew Makarewicz Stanisław Dróżdż Ry Nikonova Sergej Sigej Dmitri Prigov Andrei Monastyrski Ian Hamilton Finlay Edwin Morgan Alan Riddell Willem Boshoff Joan Brossa Eugen Gomringer William James Austin John M. Bennett John Cage E. E. Cummings David Daniels Johanna Drucker endwar K.

S. Ernst Chris Franke Ken Friedman Jesse Glass Robert Grenier Dick Higgins Davi Det Hompson Ray Johnson Ronald Johnson Bill Keith Alison Knowles Richard Kostelanetz Robert Lax d. a. levy Camille Martin Sheila Murphy Bruce Nauman F. A. Nettelbeck Tom Ockerse Kenneth Patchen Michael Peters Bern Porter Ad Reinhardt Marilyn R. Rosenberg SAMO© Graffiti Aram Saroyan Armand Schwerner Mary Ellen Solt Cecil Touchon Nico Vassilakis Regina Vater Hannah Weiner Derek White Emmett Williams Jonathan Williams Michael Winkler Z'EVConcrete poetry

Dmitry Pumpyansky

Dmitry A. Pumpyansky is a Russian billionaire businessman, he is the owner and chairman of OAO TMK, a Russian global manufacturer of steel pipes for the oil and gas industry. Pumpyansky graduated from the Kirov Ural Polytechnic Institute in 1986, earned a Candidate of Sciences, a Doctor of Science. Pumpyansky started as a metals trader ran several metal factories took over the Sinarsky Pipe Factory. Pumpyansky joined OAO TMK in 2002. Together with fellow billionaires Sergei Popov and Andrey Melnichenko, they bought the company, he bought them out in 2006, becoming the 100% owner, he is the chairman of TMK. Pumpyansky is married, with one child, lives in Yekaterinburg, Russia, he owns the 236-foot megayacht Axioma. Pumpyansky is on the list of 96 "oligarchs" in Countering America's Adversaries Through Sanctions Act, passed into US law in August 2017

Shaw Air Force Base

Shaw Air Force Base is a United States Air Force base located 8.4 miles west-northwest of downtown Sumter, South Carolina. It is one of the largest military bases operated by the United States, is under the jurisdiction of the United States Air Force Air Combat Command; the United States Air Force 20th Fighter Wing is the host unit. The base is named in honor of World War I pilot 1st Lieutenant Ervin David Shaw. Lieutenant Shaw was one of the first Americans to fly combat missions in World War I. Shaw, a Sumter County native, was assigned to the Royal Air Force 48 Squadron, as a member of the Royal Canadian Air Service. Shaw died after three enemy aircraft attacked his Bristol F.2B while he was returning from a reconnaissance mission on 9 July 1918. Lt. Shaw downed one of his attackers. Shaw Field was activated on 30 August 1941 and placed under the jurisdiction of the Army Air Corps Southeast Air Corps Training Center; the mission of the new airfield was a basic flying school to instruct air cadets in flying, the Air Corps Basic Flying School was activated at the field on 26 June to operate the school.

The airfield consisted of several auxiliary airfields. Shaw AAF Aux No. 1 –, South Carolina 33°53′08.628″N 80°29′45.85″W Shaw AAF Aux No. 2 –, South Carolina 34°06′15″N 80°33′10″W Shaw AAF Aux No. 3 –, South Carolina 33°51′30″N 80°23′10″W Shaw AAF Aux No. 4 –, South Carolina 33°56′00″N 80°22′00″WFlying activities at the field began on 22 October 1941 using Vultee BT-13 Valiants. Enough construction was completed for the first group of cadets entered training 15 December 1941, the first class completed training in February 1942; the concrete parking ramp was completed during May 1942. In October 1942, the flight training was changed to Advanced flying training and AT-6 Texan single-engine and Beech AT-10 twin-engine trainers were used. During World War II, the Army Air Forces Pilot School, under the AAF Southeast Training Center trained more than 8,600 pilots in the basic and advanced flying curriculum, its graduates were sent to Advanced Flight Training in single or multi-engine aircraft. On 1 April 1945 jurisdiction of Shaw Field was transferred to First Air Force.

The 139th Army Air Force Base Unit, I Fighter Command became the host unit. And pilots were sent to Shaw for fighter transition training in Republic P-47 Thunderbolt single-engined fighters. For a brief time, Shaw Field served as a prisoner-of-war camp; the first group of German POWs arrived on 1 March 1945. 175 of them lived in an encampment just off the main base, on Peach Orchard Road across from Shaw's hospital gate and worked on local farms in the area. They departed in the early months of 1946 for the rebuilding of European cities and towns that were devastated during the war; those prisoners were repatriated to Germany around 1947, with some returning to the Shaw and Sumter area and obtaining their U. S. citizenship. Shaw Army Airfield was designated a permanent Army Air Forces installation after the war, being transferred to Continental Air Forces on 16 April 1945. After a period of reorganization, jurisdiction was transferred to Air Defense Command on 1 March 1946. From July 1946 until May 1947 Shaw was the home of the 414th and 415th Night Fighter Squadrons.

The squadrons flew the P-61 Black Widow in Europe with Ninth Air Force during World War II, were reassigned back to the United States after the end of hostilities. The 414th was transferred to Caribbean Air Force at Rio Hato AB, Panama in March 1947 to perform an air defense mission of the Panama Canal; the 415th was reassigned to Alaska Air Command at Adak Island, Alaska in May 1947 to perform an air defense mission, over the Aleutian Islands and the territorial waters of western Alaska. Jurisdiction of Shaw was again transferred to Tactical Air Command on 23 March 1946; the 20th Fighter Group was reassigned to Shaw on 20 October 1946 from Biggs Army Airfield, Texas, transferred to Strategic Air Command. The 20th FG came under Ninth Air Force. After the establishment of the United States Air Force as a separate military branch in September 1947, Shaw Army Airfield was renamed Shaw Air Force Base, on 13 January 1948 and the 20th Fighter-Bomber Wing was activated on 15 August 1947 with the implementation of the Hobson Plan.

The 20th Fighter Group was first equipped with North American P-51D exchanged its P-51's in February 1948 for F-84B Thunderjets, the first TAC group to receive operational F-84s. The group was composed of the 77th and 79th Fighter Squadrons; the F-84s ran through May when the full complement was received. Nine were lost in accidents before the remainder were returned to Republic Aircraft in May 1949 in exchange for F-84D models. Control over the wing changed hands on 1 February 1949 with its assignment to Fourteenth Air Force. On 23 September 1949 the 161st Tactical Reconnaissance Squadron was transferred to the 20th from the 363d Tactical Reconnaissance Wing at Langley AFB Virginia; the 161st flew the Lockheed RF-80A reconnaissance version of the F-80 Shooting Star. A reduction in Air Force units in April 1949 led to a consolidation of units at fewer bases. With the outbreak of the Korean War in 1950, the mission of the 161st was to train replacement reconnaissance aircraft pilots; the 161st TFS became the nucleus on which the 363rd Tactical Reconnaissance Wing's mission at Shaw when the wing transferred there in 1951.

The 20th Fighter Group was reassigned to Langley AFB, Virg