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by yakubin 1182 days ago
Just as there is the law of conservation of energy, there is also the law of conservation of momentum. Both explain it equally well IMO.
1 comments

How can mv and mv² explain the damage "equally well", when one is linear and the other is quadratic with respect to velocity?
The point is the extreme magnitude of difference between a car and a bike/person. This shows it just fine.
Momentum is always conserved. Energy is partially conserved. If it squishes, it will be more like MV, if it bounces, it's more like 1/2 mv^2.