Insights Blog
-- Browse All Articles --
Physics Articles
Physics Tutorials
Physics Guides
Physics FAQ
Math Articles
Math Tutorials
Math Guides
Math FAQ
Education Articles
Education Guides
Bio/Chem Articles
Technology Guides
Computer Science Tutorials
Forums
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Trending
Featured Threads
Log in
Register
What's new
Search
Search
Search titles only
By:
Classical Physics
Quantum Physics
Quantum Interpretations
Special and General Relativity
Atomic and Condensed Matter
Nuclear and Particle Physics
Beyond the Standard Model
Cosmology
Astronomy and Astrophysics
Other Physics Topics
Menu
Log in
Register
Navigation
More options
Contact us
Close Menu
JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding.
You are using an out of date browser. It may not display this or other websites correctly.
You should upgrade or use an
alternative browser
.
Forums
Physics
Classical Physics
Car Crash Physics: Deceleration Calculations
Reply to thread
Message
[QUOTE="sophiecentaur, post: 6849157, member: 199289"] This link should come with huge caveats but, read carefully, it's well worth looking at. I read through parts of t hat web page. I was disturbed to read "[B]The driver flies forward due to the inertial force" [/B]which made me a bit doubtful about all the rest - although the calculations may be right in some respects. We all know Newton's first law of motion which tells us that a body continues with uniform velocity unless there is an impressed force. What force is involved which could make the body "fly forward"?? And what is an "Inertial Force" in this context? The driver just keeps going (with his Momentum) at 50kph until some force acts to slow him down. This is the force that can do the damage if it's too high. Dominik Czernia may have gone too far in trying to make it all approachable (as he claims) so you're only after ball park figures and should always err on the safe side. Another problem is where is his calculated force applied? A small, brief knock on the head can really mess you up as you hit the windscreen. A steering wheel will mess you up far more than a seat belt (with or without a padded overcoat. Pressure is at least as relevant as force. You ask about the time calculation. Nothing is constant over the impact so what time value is relevant? I've no idea. Also the calculator gives you a figure which is supposed to correspond to a mass, resting on you. That's a step too far, IMO as it's brief and goes away once you have stopped. Another misguided attempt at making things approachable. If all this were as straightforward as the website suggests then there would be no problems associated with litigation and car design. Fact is, the only values that are worth while are those which they get with crash test dummies. [/QUOTE]
Insert quotes…
Post reply
Forums
Physics
Classical Physics
Car Crash Physics: Deceleration Calculations
Back
Top