How does a Car Safety Hammer work?

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Been seeing a lot of videos about them breaking glasses in an instant, but i’m clueless to this sorcery. The same glasses take say a conventional hammers/crowbars/screwdrivers multiple tries to break. There’s no source telling how it works and i’ve personally never seen this thing in real life. Why do these hammers have such a small tip and how does it breaks glasses with ust a mild pressure on the window? I get the seatbelt cutting part, but the hammer part is a bit baffling.

Is “f=ma” the right answer to this concept?

Some unusual designs they’re coming in now (tubes) are beyond my comprehension.

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6 Answers

Anonymous 0 Comments

Also keep in mind that not every glass in your car is the same

Your windscreen is laminated glass, it will break but not shatter

Your dwindow glass is usually just hardened glass that will shatter

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