And for some more on this...
http://scienceblogs.com/gregladen/2012/10/01/mythbusters-on-head-on-collisions/
Mythbusters tested it and two cars, each travelling at 50mph going head on do not do the same damage to each as a single 100mph car that hits an immovable object.
Each car in the head-on looked most like the 50mph car into an immovable object than the 100mph car into the immovable object.
Originally Posted By: deanm11
Love your story but let me just point out a myth- two cars (or a car and a truck wheel) doing 60mph in opposite directions don't make a 120mph collision. Each side has the same kind of crash (at worst, assuming each instantly stops in the crash, no glancing off) as hitting a brick wall at 60mph. To understand this, see how either party in the crash effectively decelerates from 60 to 0 in nearly no time, just like when hitting the brick wall. What is doubled is the total energy in the crash - because there are two parties having the crash.
Originally Posted By: sleddriver
I watched one come apart right in front of me, a few decades ago. Old, rusty truck. We were heading into an underwater tunnel too. I saw something odd, then saw sparks, so I slowed way down. The back left wheel really began to wobble, then suddenly separated! It passed the truck body straight into head-on traffic....inside the tunnel!
One guy in a Camero did Chevy proud the way he quickly swerved out of the way then back into his lane.
Of course, the back rear was now on the concrete, throwing up a huge, shower of orange sparks. It slowly ground to a halt. The driver dude jumped out and poured his beer onto it! He was freeking out.
I was the first to go around him. They later closed the tunnel to clean it up.
Can you imagine a head-on 120mph collision with a truck wheel, rolling straight at you.....inside of a tunnel? The first guy swerved, not sure what happened to the wheel after that.