Eli5: when two objects colide what decides which breaks?

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Like if I threw an egg at a wall the egg would break, but if the egg is going really fast the wall would break too? Whats the underlying mechanic for this?

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Anonymous 0 Comments

The answers you’re getting are misleading or at the very least they are incomplete. In any impact/collision the same force is applied to both objects. What breaks an object isn’t force, it’s stress. Any object who’s stress at a certain location exceeds its limit would break. It can be either object, it can be both objects or it can be none of the objects. In the case of an egg, the shell is very thing and brittle meaning it is easier to break than a typical wall, but make the wall thin enough or out of a material that is weak enough and you could easily punch a hole in the wall using an egg.

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