Definition:Coefficient of Restitution
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Definition
Let two solid bodies $B_1$ and $B_2$ be in collision.
Let the components of the relative velocities of $B_1$ and $B_2$ in the direction of their common normal be respectively:
- $\mathbf u_1$ and $\mathbf u_2$ before the collision
- $\mathbf v_1$ and $\mathbf v_2$ after the collision.
By Newton's Law of Restitution:
- $\mathbf v_2 - \mathbf v_1 = -e \paren {\mathbf u_2 - \mathbf u_1}$
The coefficient $e$ is known as the coefficient of restitution.
Also see
- Results about the coefficient of restitution can be found here.
Sources
- 1998: David Nelson: The Penguin Dictionary of Mathematics (2nd ed.) ... (previous) ... (next): coefficient of restitution
- 2008: David Nelson: The Penguin Dictionary of Mathematics (4th ed.) ... (previous) ... (next): coefficient of restitution