Your math is wrong. Kinetic energy scales linearly with mass, quadratically with speed. The graphic you included supports the idea that at same speed, the pickup truck has double the KE. The 120 mph sedan has dramatically more KE than a 30 mph pickup.

Assuming that your sedan has exactly half the mass of the pickup, it would match a 30 mph pickup's KE at 30*sqrt(2) mph, which is somewhere between 40 and 45 mph.

There's quite a large discrepancy between this image and OPs image. This image says the survival rate of 30 mph (48 kph) is 60%, while OP's image says 50 kph it's at 20%. I wish they included a source for the data that could explain it.

This is the same issue I take with braking distance scales. They often vary wildly, and some don't even follow a quadratic increase in distance like you'd expect.

The energy difference is only really relevant if the thing you're hitting is significantly heavier or at least similarly heavy like a house or another car. For a person it's still much worse, but that is moreso because of the high hood of the car.

I know pickup trucks are heavy, but I'm surprised they are 16 times heavier than a Honda civic. The more you learn.

Well... the person in the last photo looks like they're not happy about getting hit by a moving vehicle at all.

I got hit by a large SUV doing between 30mph and 40mph a few years ago. I can’t tell you why or how, but I had a split second to twist and plant my hands on the hood and jump so I went up instead of under. Went into the windshield (broke it) and then got launched when she slammed on the brakes. It put my radius and ulna into my hands, my back into my guts, and knocked my brain so hard I gave the emergency crew a phone number that belonged to a girlfriend I’d broken up with almost 20yrs prior. Took me a year to be able to write again, not just physically. I’d start putting words to paper and end up with gibberish because between my brain and my hand it didn’t connect. Had to leave post-it notes around the house as a check list- did you eat, bathe, brush your teeth, feed the dogs, piss? My ability to sleep was wrecked, no circadian rythym. I don’t entirely believe in fate, but how the fuck that didn’t kill or cripple me boggles my mind (what’s left of it) daily.

So my curved front sports car is totally safe to ram into pedestrians with?

/S

K = 1/2*m*v^2

We wouldn't have so much trouble with this if all men had the same size dick.

41. don't forget the driver. He's in no danger but comes out with serious ptsd

The worst part is even if you survive they paint you all green

Good thing we went from 60 to 50 km/h speed limit in the cities. We should go even lower!

They are more reckless and arrogant though

This one was quite widespread in UK TV, it was one of the first government films to use such shocking imagery and dark themes, 40mph vs 30mph. it's probably a bit mild by today's standards, but it was notorious at the time..

https://www.youtube.com/watch?v=cEzLQJV_z8w

Why Europe? Most of the world uses KM/H.

somebody posted this in the comment above yours 13 minutes before you commented ☞

So multiply by 0.62.

I believe in you, this is what all those years in grade school trained you for.

Mass times velocity squared, that's why the huge difference in outcome for small changes in speed

Now since you mentioned it - I'm grateful that it is not miles per hour ✨