Accidents are fucking weird.
One time I got hit by a red honda civic going 35-40mph while riding on my little viper bmx bike. I was launched 10+ ft into the air in the direction of the car, landed on it's hood, smashed into the windshield then got hurled like a missile as I bounced off the pavement. 10 seconds later I'm standing up on my feet with a bruised elbow and was ready to drag my bike back home.
Then another day I try to cross an 18 inch gap on my skateboard. My board hits the landing ramp and falls into the pit. My left foot falls like 2-3 inches facing sideways then snaps back 90 degrees, shatters in 5 places and needed 3 surgeries. Was in a wheelchair for 1 month, crutches for 6 and a cane for 3 months before I could walk again.
So basically, you can get hit by a car or truck going 40mph and walk away fine. But then you can fall a few inches, completely destroy your foot and ankle, stunt your growth permanently and be handicapped for a good year. Cause even when I was able to walk after 10 months I was still limping for a good 3 more months before I could walk straight. Then about 6 more months just before I could run. -_-