Originally posted by Josh_Alexander
We are given the distance the leviathan took to stop. The timing is irrelevant for it could be PIS or the movie just wanted to emphasize on the scene.Besides, that's a more accurate way of finding the deceleration.
The time it took to stop is valid as we see nearly the entire sequence. Basically the leviathan was going slower than 20m/s.
A few things.
1. The leviathan wasn't completely stopped.
2. The initial punch did almost nothing to stop the momentum.
3. Hulk braced and used the concrete as an anchor to slow down the leviathan