Joined

·
193 Posts

1 - 9 of 9 Posts

Joined

·
193 Posts

Vehicle speed is NOT being directly monitored by the deployment sensor(s) - it's the RATE of decelleration that is.

And now for a trivia question: If you hit another car of equal mass head on and both are going 60 MPH at the time, are you subjected to the same force as if you hit a solid barrier at 120 MPH???

Joined

·
193 Posts

Joined

·
4,983 Posts

No, I believe that in theory, it would be equivalent to hitting a solid barrier at 60 mph.And now for a trivia question: If you hit another car of equal mass head on and both are going 60 MPH at the time, are you subjected to the same force as if you hit a solid barrier at 120 MPH???

I’m just going to post Isaac Newton’s Third Law of Motion.

“For every action, there is an equal and opposite re-action.”

So, hitting the wall at 120 mph, the wall is going hit you back at 120 mph, giving you totally different force. For example Lets say it takes 40 (N) to push on the wall, the wall will push on you with the same force 40 . You are going to experience force of 80 (N) not applying friction force. But If and only if you over come the friction force, you will eventually move the wall

To better understand this (and put the "...equivalent of a 120 impact" legend to rest) visualize the impact from a side view in slow motion. If both vehicles are crushing (ABSORBING energy - not creating it) at approximately the same rate, you could almost draw a (theoretical) vertical straight line right where they're impacting. Since both vehicles are crushing at approximately the same rate, this straight line doesn't move...which makes this straight line represent a fixed barrier which is being struck at 60 mph from both sides.

Kind of confusing...but it's really kind of simple of you think about it from the perspective of both vehicles and not just one.

As for the winner's prize someone was asking about - it's the satisfaction of knowing you understand the real world and don't simply accept ongoing myths as fact. Great job!!

1 - 9 of 9 Posts

Join the discussion

Ford Focus Forum

Forum community dedicated to Ford Focus owners and enthusiasts. Come join the discussion about RS/ST performance, modifications, troubleshooting, maintenance, and more!

Full Forum Listing
Explore Our Forums

Recommended Communities

Join now to ask and comment!