I’m not talking about pipe. I mean stuff like this
I understand bailing. You roll out of a fall, that makes sense. I mean when you do land something like this, how is it that your body can take the impact? Is it dispersed through the momentum of the board?
In: Physics
You are generally killed by impact force, that is what we can’t handle well. Impact is about how quickly an object comes to a stop. Its a simple function (but maybe not for a 5 yr old):
F = (m * v) / t,
* F = impact force,
* m is the mass of the person/object,
* v is the speed of the person/object,
* t is the time to come to a stop.
Alternatively, after a bit of maths, you can see impact as a function of distance travelled during a collision, as per:
F = (m * v²) / (2 * d) ,
* d is the distance travelled during collision.
The skateboarder never comes to a quick halt (as per someone jumping from the same height strait down onto the pavement). Thus his impact force is divided by double the distance he is using to slow himself down. Many of those falls looked like he got 2m worth of slow down; so similar to a car crash.
So, as we are in that ball park, lets compare to car crash stats. Assume he was a very fast runner and can get to 30 km/h. In terms of pedestrian vs car safety stats, via google: that’s < 5% chance of a fatality and < 50% chance of injury for the average person. The skateboarder is a lot fitter than the average person and has practised falling a lot. So he probably will take some damage, but otherwise probably be fine.
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