I figured the blast had substantial mass, hence why I stated what was left of it was jettisoned about them. I would regularly agree that had their not been Negative, or perhaps another energy source that the javelins would at least be slowed down. However, as soon as contact would be made with Negative, it'd tear away the substance and there'd really be no collision of masses, since Negative would simply eat away and cut through the tar. Itd be like throwing a superheated knife through warm bread at like 70 mph. Any resistance, if at all would be negligible at best.