elastic collision


Also found in: Dictionary, Wikipedia.

elastic collision

[i′las·tik kə′lizh·ən]
(mechanics)
A collision in which the sum of the kinetic energies of translation of the participating systems is the same after the collision as before.
References in periodicals archive ?
In these equations, e refers to elasticity or coefficient of restitution--the ratio of relative speeds after and before a collision--varying between 1, a perfectly elastic collision, and 0, a perfectly plastic collision.
Although these outcomes suggest that people's judgments qualitatively mimic the expected output of the physical model, there is one important quantitative disparity: namely, the mean ratings are not smaller than the theoretical ratings that would be obtained given a perfectly elastic collision (e = 1).
5%) ignored the variations in chain length and based their responses on the launcher's drop height alone--which might reflect the assumption of a perfectly elastic collision model, or previous experience with the device.
A null effect of chain's length in the subjective ratings--non integration result--would signal either that people expect perfectly elastic collisions or that they are relying on a simple heuristic considering only launcher's impact velocity.
Their results describe more satisfactorily the scattering data for the elastic collisions considered there except smaller shifts were found to exist around the diffraction patterns.
The normal procedure (5) is to describe the collisions as heavy particle elastic collisions ignoring the fact that at high energies most of the energy loss is due to the interaction of the fast particle with the atomic electrons of the background gas.
This is a general well-known result in the classical mechanics of elastic collisions valid even in relativistic mechanics) which we will make use of later.
2] can disappear by means of an infinitely denumerable number of elastic collisions, in each one of which the energy is conserved.