When jonah sends in the box top from his cereal to receive a free dvd of a cartoon featuring one of his favorite characters, he is responding to a

Jonah is responding to a free in-the-mail premium.

In marketing, the free-in-the-mail premium is a type of sales promotion that requires consumers to mail one or many proof of purchase of the product, and in exchange, they have a free gift delivered to them.

elastic potential energy