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Considering a black bird weighs approx. 80-120 gram (according to google), I was surprised by the force of the impact.

Anyways, now I'm wondering if anyone could calculate with what force the bird hit the helmet? How much it "weighed" at the point of impact (if you can put it like that?).

I would say the black bird was of average size, so let's say 100 grams. When it hit me, I was riding along at 60 kph (=37.28 mph).

The bird didn't really carry any speed into the impact, as it came in from the side, hitting the front of the helmet.

I hope someone can help me with this calculation (I believe google suggests something about Newtons 2nd law?).

Thanks,

Rasmus.