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  2. Elastic collision - Wikipedia

    en.wikipedia.org/wiki/Elastic_collision

    During the collision of small objects, kinetic energy is first converted to potential energy associated with a repulsive or attractive force between the particles (when the particles move against this force, i.e. the angle between the force and the relative velocity is obtuse), then this potential energy is converted back to kinetic energy ...

  3. Air track - Wikipedia

    en.wikipedia.org/wiki/Air_track

    The air track is also used to study collisions, both elastic and inelastic. Since there is very little energy lost through friction it is easy to demonstrate how momentum is conserved before and after a collision. The track can be used to calculate the force of gravity when placed at an angle. [1]

  4. Coefficient of restitution - Wikipedia

    en.wikipedia.org/wiki/Coefficient_of_restitution

    The COR is a property of a pair of objects in a collision, not a single object. If a given object collides with two different objects, each collision has its own COR. When a single object is described as having a given coefficient of restitution, as if it were an intrinsic property without reference to a second object, some assumptions have been made – for example that the collision is with ...

  5. Collision detection - Wikipedia

    en.wikipedia.org/wiki/Collision_detection

    Collision detection is a classic problem of computational geometry with applications in computer graphics, physical simulation, video games, robotics (including autonomous driving) and computational physics. Collision detection algorithms can be divided into operating on 2D or 3D spatial objects. [1]

  6. Collision theory - Wikipedia

    en.wikipedia.org/wiki/Collision_theory

    Collision theory was proposed independently by Max Trautz in 1916 [1] and William Lewis in 1918. [2] [3] When a catalyst is involved in the collision between the reactant molecules, less energy is required for the chemical change to take place, and hence more collisions have sufficient energy for the reaction to occur.

  7. Direct simulation Monte Carlo - Wikipedia

    en.wikipedia.org/wiki/Direct_simulation_Monte_Carlo

    The polar angle is distributed according to the probability density, = ⁡ Using the change of variable = ⁡, we have () = so ⁡ = ⁡ = = The post-collision velocities are set as = + = Note that by conservation of linear momentum and energy the center of mass velocity and the relative speed are unchanged in a collision.

  8. Momentum-transfer cross section - Wikipedia

    en.wikipedia.org/wiki/Momentum-transfer_cross...

    In physics, and especially scattering theory, the momentum-transfer cross section (sometimes known as the momentum-transport cross section [1]) is an effective scattering cross section useful for describing the average momentum transferred from a particle when it collides with a target.

  9. Collision - Wikipedia

    en.wikipedia.org/wiki/Collision

    After a zero-friction collision of a moving ball with a stationary one of equal mass, the angle between the directions of the two balls is 90 degrees. This is an important fact that professional billiards players take into account, [ 2 ] although it assumes the ball is moving without any impact of friction across the table rather than rolling ...