What's this toy called?

Question

The toy that has these metal balls hanging, and if you swing the ball on the left or the right, it hits the center ball and the energy comes out the other side of the center ball hitting the opposite ball, and then back and forth. I think it uses kinetic energy and momentum.

Answer 1

I believe you are talking about Newton's Cradle

Answer 2

It's an executive toy know as 'Newton's Cradle'

Answer 3

newtons cradle

Answer 4

It's called a Newton's Cradle. It's named after Issac Newton -

http://en.wikipedia.org/wiki/Newton%27s_...

They explain it much better than I or anyone else on here could!