# Coefficient of Restitution?

BMcN
Whats the equation for the coefficient of restitution again? Went blank!

lavalamp
Code:
Coefficient of Restitution = Speed of Separation = v[sub]1[/sub]-v[sub]2[/sub]
-------------------   -----
Speed of Approach    u[sub]1[/sub]-u[sub]2[/sub]

Mentor
For the simple case of something bouncing off the floor (or any immoveable object) the coefficient of restitution is:

c = vf/v0
where v0 is the speed of the object before the collision, and vf is the speed after the collision.

For perfectly elastic collisions, c = 1.

lavalamp
It's like waiting for a bus, you have to wait for ages and then two come along at once.

BMcN
v1-v2/u1-u2, that's the one, that's guys!