# coefficient of restitution

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## coefficient of restitution

[¦kō·ə′fish·ənt əv ‚res·tə′tü·shən]
(mechanics)
The constant e, which is the ratio of the relative velocity of two elastic spheres after direct impact to that before impact; e can vary from 0 to 1, with 1 equivalent to an elastic collision and 0 equivalent to a perfectly elastic collision. Also known as restitution coefficient.
References in periodicals archive ?
According to classical mechanics, energy loss [DELTA]E caused by the collision can be expressed as a function of coefficient of restitution e and the relative velocity of two colliding objects [7]:
To achieve this goal, Solver is permitted to change three values: the preimpact speed of Veh 2 (cell G12), the coefficient of restitution, e (cell B8), and the impulse ratio [mu] (cell B9).
Importantly, this seems to be a default value assumed by observers, as the depictions were devoid of any information that could be used to infer the coefficient of restitution.
This means that children were able to hit the LC balls harder despite the smaller coefficient of restitution of the LC balls.
The coefficient of restitution e does not depend on the pre-impact velocity and can be expressed in the form
The rules of major-league baseball specify that a baseball's coefficient of restitution must lie between 0.
Sports Authority, the nation's premier full-line sporting goods retailer, is reminding consumers that Batted Ball Coefficient of Restitution (BBCOR) baseball bats are now mandatory for the National Collegiate Athletic Association (NCAA) and the National Federation of State High School Associations (NFHS).
Powerful kicks are achieved through a high foot velocity and coefficient of restitution.
I'd like to offer a simple explanation based on coefficient of restitution (CR), the ratio of departing speed to the approach speed between impacting objects, as in the case of the runner and the pavement.

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