A Super Toy

Oh, too bad! That wasn't the correct answer.
You are already on the right track, but rethink you explanation one more time! Energy can only be transformed into another type of engery. Elasticity cannot simply set free energy just like that.

You haven't found the right anser, yet, but another helpful hint can lead you onto the right track. Don't let it discourage you! Use another helpful hint and rethink.