Very tragic story, but it is impressive the difference it makes driving a 2015 Model S compared to a 2008 Chevy Cobalt.
One dead in wrong-way crash on I-270
One dead in wrong-way crash on I-270
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Very tragic story, but it is impressive the difference it makes driving a 2015 Model S compared to a 2008 Chevy Cobalt.
One dead in wrong-way crash on I-270
"... treated at the scene..." is pretty impressive, given that the combined speed was probably in triple digits.
Tragic.
Besides all the inherent safety built in to the Model S structure, you're talking about one car's mass of 5400lbs vs the Cobalt at barely over 2,000. Things don't stop equally with direct impacts like this.
I read somewhere that in a head-on collision, the speeds are not added to calculate the impact. So it's not 70+70 = hitting a wall at 140 MPH. In fact if your car is slightly heavier than the oncoming car as in this case and both are going at the same speed, it might be even slower than hitting a wall at 70 MPH because the "wall" would move/buckle a bit.
Not quite, if two similar vehicles collide head on, they will both absorb energy in such a way that it is like a single car impacting a non -deforming object at 70. In theory, the Model S crumple zone helps the other vehicle also. In practice, the other vehicle is so poorly build (compared) that it will be destroyed anyways.If both cars weigh the same, and bot are traveling 70 MPH, then it is exactly like hitting the same car 140 mph with the other car sitting at 0. If the brick wall doesn't move but the car you hit does, then hitting the brick wall will be worse. But some brick walls are thin and you'll go right through them which would be better.
Not quite, if two similar vehicles collide head on, they will both absorb energy in such a way that it is like a single car impacting a non -deforming object at 70. In theory, the Model S crumple zone helps the other vehicle also. In practice, the other vehicle is so poorly build (compared) that it will be destroyed anyways.
I read somewhere that in a head-on collision, the speeds are not added to calculate the impact. So it's not 70+70 = hitting a wall at 140 MPH. In fact if your car is slightly heavier than the oncoming car as in this case and both are going at the same speed, it might be even slower than hitting a wall at 70 MPH because the "wall" would move/buckle a bit.
Sorry, but the 2008 Cobalt curb weight is 3216 lbs which is still crazy light for a sedan, but let's get our facts straight please.
If both cars weigh the same, and bot are traveling 70 MPH, then it is exactly like hitting the same car 140 mph with the other car sitting at 0. If the brick wall doesn't move but the car you hit does, then hitting the brick wall will be worse. But some brick walls are thin and you'll go right through them which would be better.
Combined speed means nothing in a head on impact, only in the closing speed as it affects reaction time."... treated at the scene..." is pretty impressive, given that the combined speed was probably in triple digits.
Mythbusters tackled this recently, the physics says it's like hitting a wall at 70mph (not a combined 140mph).
If both cars weigh the same, and bot are traveling 70 MPH, then it is exactly like hitting the same car 140 mph with the other car sitting at 0. If the brick wall doesn't move but the car you hit does, then hitting the brick wall will be worse. But some brick walls are thin and you'll go right through them which would be better.
I'm sorry I was off a few pounds 2815-3001 lbs (wiki). Looked to be a convertible so I rounded down. I should have calculated for that.
Chevrolet Cobalt SS - Wikipedia, the free encyclopedia
Of course the rest of the world will understand the point.