Calculate elasticity of collision from kinetic energy loss?

[Sewager]

Homework Statement

After a lot of searching I can't seem to find a way to solve this. Basically, for a bouncing ball, if I know the dropped height and rebound height in a vacuum. How do I calculate the elasticity between the ball and the floor?

Homework Equations

K = 1/2 mv2

The Attempt at a Solution

I did a lot of searching online...but I still have no idea. I tried to calculate kinetic energy loss, but what's after that?

 

[Sewager]

Any help is appreciated, thank you!

 

[haruspex]

What definition do you have for elasticity?

 

[Sewager]

What definition do you have for elasticity?

Hello, the definition of elasticity is the elasticity in this simulation:

http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html

 

[haruspex]

Hello, the definition of elasticity is the elasticity in this simulation:

http://phet.colorado.edu/sims/collision-lab/collision-lab_en.html

That doesn't define elasticity. You need a definition to have any hope of answering the question.
The concept of a coefficient of elasticity arises in many diverse subjects. In collisions, the more usual term is the coefficient of restitution: http://en.wikipedia.org/wiki/Coefficient_of_restitution. See if that helps.

 

[Sewager]

That doesn't define elasticity. You need a definition to have any hope of answering the question.
The concept of a coefficient of elasticity arises in many diverse subjects. In collisions, the more usual term is the coefficient of restitution: http://en.wikipedia.org/wiki/Coefficient_of_restitution. See if that helps.

Ah, this is exactly what I m looking for, thank you so much!