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Momentum - Wikipedia, the free encyclopedia In physics, momentum is a physical quantity related to the velocity and mass of an object. For example the momentum of a 5 kg bowling ball would have to be described by the statement that it was moving westward at 2 m/s. Massless objects such as photons also carry momentum; the formula is p=E/c, where E is the energy the photon carries and c is the speed of light. en.wikipedia.org /wiki/Momentum   (1106 words)

Outline - Center of Mass, Momentum, and Collisions - Physics 104 Linear momentum of an object p = mv, where v is the velocity of an object of mass m. Since momentum is a vector quantity, you may consider the conservation of the components of momentum. Since impulse and momentum are vector quantities, you may set the X-component of the impulse equal to the change in the X-component of momentum and the Y-component of the impulse equal to the change in the Y-component of momentum. www.wellesley.edu /Physics/phyllisflemingphysics/104_o_momentum.html   (600 words)

AllRefer.com - momentum (Physics) - Encyclopedia Momentum is a vector quantity; i.e., it has both a magnitude and a direction, the direction being the same as that of the velocity vector. The momentum of a body should not be confused with its kinetic energy. The angular momentum of a particle rotating about a point is equal to the product of the mass of the particle, its angular velocity, and the square of its distance from the axis of rotation. reference.allrefer.com /encyclopedia/M/momentum.html   (411 words)

Linear Momentum and Collisions The momentum of the whole system must be constant, meaning that the center of mass travels in a straight line at constant velocity. This idea that in the absence of external forces the momentum remains constant is called the principle of the "conservation of linear momentum". Using the conservation of linear momentum and the conservation of mechanical energy, we may determine from the before collision conditions what the conditions will be after the collision without ever knowing exactly what went on during the collision. www.mcasco.com /p1lmc.html   (2085 words)

MEASURING LINEAR MOMENTUM ANGLES Linear momentum angles have long been a thorn in the side of almost everyone attempting to investigate vehicular accidents. LINEAR MOMENTUM: A vector quantity which is the product of a body's mass (m) and its velocity. The linear momentum formula does not call for the average velocity between maximum engagement and final rest, it uses an instantaneous post impact velocity. www.rec-tec.com /Lmangle.htm   (1334 words)

PhyUnit7 This means a change in momentum is caused by a force that acts on an object for some duration of time. All momentum is conserved, whether it is linear momentum or circular (angular) momentum. To calculate individual changes in momentum we set the initial and final momentum equal to each other or the loss of momentum of one equals the gain in momemtum of the other. chssciences.homestead.com /PhyUnit7.html   (479 words)

Physics & Biomechanics Glossary: Linear Momentum   (Site not responding. Last check: 2007-10-22) Momentum is the tendency of an object to keep moving. Momentum is a vector quantity and depends on both the mass of the object and the velocity of the object. The following scenario illustrates the concept of momentum when there is one large skater and one small skater, both skating at the same velocity. btc.montana.edu /Olympics/physbio/glossary/g14.html   (114 words)

Momentum   (Site not responding. Last check: 2007-10-22) The size of the momentum is equal to the mass of the object multiplied by the size of the object's velocity. The direction of the momentum is the same as the direction of the object's velocity. One object might change momentum, say losing some momentum, as another object changes momentum in an opposite manner, picking up the momentum that was lost by the first. id.mind.net /~zona/mstm/physics/mechanics/momentum/momentum.html   (124 words)

Conservation of Momentum Momentum is conserved in any collision if the effect of any external forces present is negliable relative to the effect of the collision. This is the statement of the conservation of momentum. Momentum is a vector, and each component is conserved separately. theory.uwinnipeg.ca /physics/mom/node3.html   (91 words)

Circumventing Newton's 3rd Law of Motion   (Site not responding. Last check: 2007-10-22) But because the linebacker has more momentum to start with which must be reduced in him to zero when he stops, he generates a greater force than the skinny guy and is therefore capable of busting down the wall. In the case of linear momentum, the force is straight ahead, and for angular momentum, the force is circular. In this case, one department was linear force and linear momentum along with Newton's 3rd Law, while the other compartment was angular momentum and the fact that it generates no linear forces. www.montalk.net /newton/newton.html   (2319 words)

Linear Momentum Since velocity is a vector quantity and mass is a scalar quantity, momentum's vector nature is dependent on the vector properties of the object's velocity. Since momentum is a vector, all objects in a closed system can individually have momentum but the system as a whole have a net momentum of zero. Note that in the equation for impulse, if the amount of momentum being changed remains constant, that the net F can be maximized by decreasing the time of impact. online.cctt.org /physicslab/content/PhyAPB/lessonnotes/momentum/lessonmomentum.asp   (641 words)

Bang! Boing! Pop! Linear Momentum Linear momentum is a quantity associated with how a mass moves along a straight path. Linear momentum is defined to be equal to the mass of an object times its velocity. Two billiard balls rolling toward each other each have some linear momentum and after they hit, their total linear momentum will be the same as their total linear momentum before the collision. library.thinkquest.org /3042/linear.html   (566 words)

S-Cool! - AS & A2 Level Physics Revision - Quicklearn Linear momentum, p, is defined as the mass, m, of an object multiplied by its velocity, v, so The Principle of the Conservation of Momentum states that if objects collide, momentum before the collision is the same as momentum after it (provided that no external forces, e.g. The Principle of the Conservation of Momentum states that the momentum after the explosion must therefore be zero as well. www.s-cool.co.uk /topic_quicklearn.asp?loc=ql&topic_id=5&quicklearn_id=2&subject_id=2&ebt=140&ebn=&ebs=&ebl=&elc=13   (402 words)

Physics Demonstrations on (1N) - Linear Momentum    (Site not responding. Last check: 2007-10-22) The force created by a momentum change in a fine water stream is calculated using measurements obtained with a large scale impulse balance. Conservation of momentum of a thrust producing stream on water is shown by two carts on a track: one has a nozzle, the other a bucket to catch the water. Greater momentum transfer during the elastic collision is observed. demo1.physics.wisc.edu /UW-Demos_Pira/1N-LinearMomentum.html   (2903 words)

generic document for building HyperPhysics If one part of the system is given a momentum in a given direction, then some other part or parts of the system must simultaneously be given exactly the same momentum in the opposite direction. The angular momentum is a vector quantity and the vector sum of the angular momenta of the parts of an isolated system is constant. Conservation of Momentum: the mass times the velocity of the center of mass is constant. hyperphysics.phy-astr.gsu.edu /hbase/conser.html   (631 words)

Physics Help and Math Help - Physics Forums - Linear and Angular Momentum He did this by stating that the angular momentum L is mv*l, where m is the mass, v is the velocity and l is the distance. IF you calculated the momentum vector of every point in the figure and summed (integrated) them all, the result would be a constant momentum vector- angular momentum for a rigid body is just an easy way of handling that. The equations of linear and angular momentum of both objects give you 12 equations; the last is given with equal normal velocity at the contact point at the end of the first impact period. www.physicsforums.com /printthread.php?t=41213   (1700 words)

[No title] Since the linear momentum of the isolated system must remain zero, the raft must acquire a linear momentum that is equal in magnitude and opposite in direction to that of the sunbather. From the definition of linear momentum, p = mv, we know that the direction of the linear momentum of an object is the same as the direction of the velocity of the object. SOLUTION Applying the principle of conservation of linear momentum and assuming that the direction in which Al moves is the positive direction, we find  EMBED Equation   Solving this equation for m and suppressing the units in the interests of clarity, we find  EMBED Equation   20. www.fiu.edu /~tgarcia/teaching/phy2053/ch7.doc   (1193 words)

The linear impulse-momentum relation L denotes the linear momentum and is defined as the mass times the velocity of a particle. Therefor, the linear momentum of a particle is changed by the impulse of the resultant force on the particle. Therefore, the total linear momentum of the system is changed by the impulse of the external forces. em-ntserver.unl.edu /NEGAHBAN/EM373/note12/note.htm   (258 words)

Momentum   Physically, momentum is a measurement of an object's tendency to continue in motion at a constant velocity. when the vector sum of the external forces acting on a system is zero, the total linear momentum of the system remains constant, even though the distribution of momentum in the system might be different. The relation between the conservation of linear momentum and the conservation of energy is stronger than it first appears. physics.tamuk.edu /~suson/html/2325/Momentum.html   (754 words)

Momentum Physically, momentum is a measurement of an object's tendency to continue in motion at a constant velocity. Physically, it can be stated as when the vector sum of the external forces acting on a system is zero, the total linear momentum of the system remains constant, even though the distribution of momentum in the system might be different. With the understanding that time and space are really connected into a single object, the two conservation principles, conservation of energy and conservation of linear momentum, become united into a new single conservation law. physics.tamuk.edu /~suson/html/1401/momentum.html   (639 words)

Conservation of Linear Momentum             Before attempting to determine if momentum and/or energy was conserved in this collision system several areas of uncertainty arise.   They are the distance and angle measurements derived from the scale drawn on the air tabletop, the mass determination of each puck and a lack of conservation of momentum by definition in this collision. This value is within the uncertainty for the measurements off the video and does indicate that the momentum was conserved for the y component of this impact.  But overall the momentum was not conserved. Assuming momentum is conserved the mass of the particles are: (units are in pixels) www.mrtruckar.com /reports/lab12/lab12.htm   (605 words)

Physics Book - Chapter 4 Linear momentum is defined as mass ×; velocity, rather than mass times speed as originally thought by Monseiur Descartes. In this view linear momentum, not mass alone, is a measure of the inertia of an object. This is called the conservation of linear momentum and is enforced by the physics police whenever the external forces acting on the system sum to zero. prism.tc.cc.tx.us /physicsbook/ch4.html   (16854 words)

The Physics of Everyday Stuff, by Sam Hokin   (Site not responding. Last check: 2007-10-22) Newton was talking about momentum conservation when he wrote "every action has an equal and opposite reaction". Primary recoil cannot be reduced, since it is simply associated with the forward momentum of the bullet. The total momentum of a system is conserved if there are no outside forces acting on it. www.bsharp.org /physics/stuff/recoil.html   (549 words)

Accident Reconstruction Research : The ARC Network Momentum is a vector quantity, meaning that it has both amount and direction, and it is the product of the mass times linear velocity of a moving object. Defining the quantity linear momentum: This segment of the course will extend the conservation principles (energy) which we considered in the last section to a new conserved quantity - momentum. Momentum - The momentum of a particle is defined as the product of its mass times its velocity. www.accidentreconstruction.com /research/lmomentum/index.asp   (377 words)

SparkNotes: Conservation of Momentum: Conservation of Momentum This phenomenon of momentum constancy describes the conservation of linear momentum in a nutshell; in this section we shall prove the existence of the conservation of energy by using what we already know about momentum and systems of particles. Thus the total momentum of the system is simply the total mass times the velocity of the center of mass. Because there are no net external forces acting on the system, this momentum must be compensated for by a momentum in the opposite direction as the velocity of the ball. www.sparknotes.com /physics/linearmomentum/conservationofmomentum/section3.rhtml   (677 words)

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