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This is somewhat of a shower thought. Let's say there is a person with the same capabilities as superman. Would that person actually be able to stop an Asteroid from hitting earth? I can only image that a person with superhuman strength and speed would directly fly through the asteroid, not really stopping it but drilling a hole into it.

Edit: I guess too many think of this as a superhero question. Think of the person trying to stop the asteroid as a super hard, human shaped object hitting the asteroid at a high speed.

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closed as off-topic by WillO, ZeroTheHero, Kyle Kanos, Emilio Pisanty, Jon Custer Apr 2 '17 at 21:40

This question appears to be off-topic. The users who voted to close gave this specific reason:

  • "Homework-like questions should ask about a specific physics concept and show some effort to work through the problem. We want our questions to be useful to the broader community, and to future users. See our meta site for more guidance on how to edit your question to make it better" – WillO, ZeroTheHero
If this question can be reworded to fit the rules in the help center, please edit the question.

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    $\begingroup$ I'm voting to close this question because it is about the capabilities of a fictional character and not physics. $\endgroup$ – Kyle Kanos Apr 2 '17 at 19:08
  • $\begingroup$ @KyleKanos You are wrong, it's not about the hero, it's about what he would represent. Think of a human shaped object that would hit the asteroid from below like bullet. $\endgroup$ – Redbeard Apr 2 '17 at 19:55
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true, if the surface area of contact is tiny (which is true considering the asteroid is of radius ~5km and a human can only have a contact area of a metre at max) the pressure would be large and would indeed drill a hole.

if the human has some method by which he can apply same force but say on a balloon which doesn't burst and can transfer the force onto the asteroid, he might be able to do it.

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