In general, poor physics are used to dramatize and exaggerate actions and provide more excitement to the story. It captures the attention of the audiences more than when it is realistic. For example, when two people are falling off a building, normally, they would just be falling. But in the movie, to make it more interesting, the director might slow the scene down and have the actors fight or talk while falling. Do the characters really not care about their own lives, that they will fight and talk while falling to their "deaths"? We find that if real life physics were applied to action and sci-fi movies that we would not enjoy watching them very much. We watch movies for entertainment, but where is the entertainment in watching what would happen in every day life? We watch these movies for the thrill, the action, the laughs, and the cringes. When a villain dies a boring/normal death we find it unappealing, you spend 1 hour to 2 watching the movie only to get an anticlimactic ending. We what to laugh or cringe at the villain's demise. We want to feel anxious about the hero in dire situations. But our emotions are only invoked when poor physics are used.
For this movie, the fight scenes are more dramatized and more attention seeking due to the use of bad physics. When a motorcyclist flies into an opened van after he jumps over a green bin, he goes flying through the windshield and on to the car in front of it. In reality, he would have crashed in to the van and stayed in the van since the front seats might be catching his fall. He wouldn’t have flown out of the windshield. However, to make it more interesting, the director sent him flying through a windshield towards his “death”.
