should I use cocos?

I want to make app (something like a book with animations), where will be a character that will be able to perform simple movements like:

1.Walking back and forth(left and right).
2.Character can go up to the screen and move away from it.
3.Сharacter can handle some sort of object and perform any action with it.
All movements are known in advance, it is not a game. The rest part of the application will be made in native sdk(android or iOS)

Can I use for this purposes cocos2d?

You can use cocos2d-x for this purpose.
If you want to release your app more than one platform, cocos2d-x will save you a lot of time.