Newton's Third Law
Entertainment medias are well known to
stretch the believability of their own created world to fit their narratives.
From story to character development, they only resemble the real world to some
extent. Certain world requires both story and character to be close to the real
world as possible while some are way far off. The same can be said for the
physics of such worlds. The physics in such created worlds are able to stretch
and bend, just like the story and character development, into something that
barely resemble the real world properties, such as the third of Newton's laws
of motion of classical mechanics. Newton's third laws of motion of classical mechanics states that “for
every action, there is an equal and opposite reaction”. In the following, I
will be exam the physics principle of action/reaction that is being incorrectly
portrayed in Power Rangers Light Speed Rescue, Heroes of the Storm, and One
Punch Man.
Power Rangers are
famous for heavy deviation from the real world and their flying kicks are well
known to violate Newton’s Third Law. Every episode of Power Rangers has at
least one scene of a Ranger jump in the air and kicks a lineup of bad guys, one
immediately after the other, with no effects of recoil. As
described by the third of Newton's laws of motion of classical mechanics, all
forces occur in pairs such that if one object exerts a force on another object,
then the second object exerts an equal and opposite reaction force on the
first. Therefore, the said Ranger wouldn’t be able to continue to his kicking campaign
down the lineups of bad guys and whimsical monsters. In the real world, the
Ranger needs to somehow recover from the first kick since the action and the
reaction are simultaneous then jump again to land another kick. On top of that,
the kicks barely and sometimes not even touch the bad guys and all of them are
over exaggeratedly falling back. The force of the kick that being deliver does
not have enough energy to force the heavy monsters to fall back in such a
manner. Yet, the movie magic is able to allow the breaking of the third law to
happen consistently.
Next, we will look a video game character named Falstad
Wildhammer,
is a ranged assassin hero from Heroes of the Storm, who consistently breaking
the action/reaction principle of physics just because of his existence. Falstad
is a dwarf who rides on a gryphon mount named Swiftwing. Thanks to Swiftwing, Falstad
is able to strike enemies from afar and fly to distant parts of the battlefield.
However, his existence on the battle is stuck in a limbo where he is neither
flying or on the ground. He is still being affected by grounded attacks while
he is seen floating above the ground and he can’t fly over obstacles unless he’s
activated his ability that allows him to fly a short distance across the
battlefield. During the time that he is “stuck” on the ground Swiftwing is seen
flapping his wings. Yet, the flapping action does not seem to provide him with
lift. Consider the flying motion of birds in the real world. A bird flies by
use of its wings to push air downwards. Since forces result from mutual
interactions, the air must also be pushing the bird upwards. The size of the
force on the air equals the size of the force on the bird. Action-reaction
force pairs make it possible for birds to fly. The force that Swiftwing
provided with each flapping of its wings shouldn’t be enough to provide them
both with enough lift to fly or float.
One-Punch Man is an interesting case study
because it is an anime and also parody of the superhero genre, therefore the
physics in this world can deviate far from the real world properties. In this
particular scene, we see Saitama, the hero of the anime, air punch his
apprentice, a cyborg named Genos, during a fight to measure their strength. This
punch is no ordinary punch because the punch is so powerful that it levels a
mountain range. Yet, Genos, who face is mere inches away in front of the punch,
is not affected by its powerful force. If a mountain range some distance back
is leveled by the punch, a face at the source of such force should receive more
of that force than what the mountain took. At the same time, Saitama leaves no
trace of a reaction force applies to the ground he is standing on. When
something is exerting force on the ground, especially from such a powerful
punch, the ground will push back with equal force in the opposite direction. Since
the ground is made up of about the same stuff as the mountain range, Saitama
should have left about an equal about of damage on the ground.
Power Rangers, Falstad
from Heroes of the Storm, and One Punch Man proves that the content does not
need to follow the real world physics in order to make it believable. Newton's
third laws of motion of classical mechanics is a big part of our reality. But
in the fantasy world of the entertainment medias, action/reaction principle of
physics is malleable into any shape and size that the creators of these worlds
wanted it to be. As long as the world
that these characters live in does not contradict the physics that they already
established, it will not break suspension of disbelief of the audiences.