Avengers: Infinity War

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Avengers is a classic superhero action movie with all of the classic superhero tropes, which means it is bound to have a bountiful supply of ridiculous physics. Today is only about Newton's three laws of motion, so there are a lot of things we are going to leave out but don't worry, there are still many scenes to talk about.

In this scene, Thor throws Stormbreaker into a bunch of goons and it keeps going without any decrease in speed. This violates Newton's first law in which an object in motion stays in motion unless acted on by an outside force. Sormbreaker does not slow down even after it chops dozens of goons that would produce a force against Stormbreaker.

Dr. Strange does this all the time so it might slip past you, but how does he levitate. According to Newton's second law F=ma, but Dr. Strange is levitating while gravity is acting on him and he also has mass, which means there should be a force pulling him down, but there is not. The only way for him to levitate is for the cloak of levitation to exert a downward force equal to the force of gravity (which it is not).

In the first video when Thor slams Stormbreaker into the ground, he creates a massive crater, but in this scene in which Stormbreaker is going arguably faster, no crater is created which doesn't make any sense which violates Newton's third law. Even if Thanos was able to stop Stormbreaker, that doesn't change the fact that the force was transferred to the ground as well.

Comments

  1. Prof. Chris FragileOctober 8, 2019 at 4:13 PM

    I think you mean the cloak needs to exert an upward force, don't you? Gravity is already pulling down on Dr. Strange. For him to levitate, there must be an equal force pointing upward. If you're going to write such a short blog, at least make sure it's accurate.

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