I would say both are wrong. If you'll allow me to explain:
The first looks to awkward. Although it accurately describes the motion undertaken, the three arcs look too cumbersome, and take away from the drawing instead of emphasizing the motion. I can see the intent in the first one, but it doesn't sit well with me.
The second looks more streamlined, and takes less away from the picture. However, the motion undertaken is different from the intended effect. While the intention is to show a hand moving to throw a book, and the book flying into the face of the other worm, it looks more like the book feel from some unknown place and bounced off the lowered hand of the "throwing" worm. The differentiation between the two movements is indicated in the first picture moreso, so the intention that there are 2 different actions is clear.
If I were to propose a compromise, perhaps a combination of the two styles is in order. Make a more streamlined gesture of action lines signifying the movement of the 1st worms hand (as in the 2nd picture), but separate this movement from the action of the book flying into the face of the other worm (as in the 1st picture). This si, of course, only a suggestion, so feel free to do as you please.