How is momentum conserved in a Newton's cradle when one steel ball hits the other?

Responses

Both balls have momentum to start, and they share it after the collision.

Both balls have momentum to start, and they share it after the collision.

Momentum is not conserved in the steel balls of a Newton's cradle.

Momentum is not conserved in the steel balls of a Newton's cradle.

All the momentum starts in one ball, and after the collision, it is all in the other ball.

All the momentum starts in one ball, and after the collision, it is all in the other ball.

All the momentum starts in one ball, and after the collision, they share it.

Both balls have momentum to start, and they share it after the collision.