Airbag jackets? Your thoughts? (now other gear questions)

[Evan]

I agree with your point, but newtons first law still doesnt (directly) apply. The first law applies to objects with no net forces.

The way I looked at it, the bike is moving along at a given speed, so there are no forces acting on it (or the rider) to accelerate it faster or slower. Maybe not quite 'at rest' but not changing.

sure, but the event question is when the bike hits something, no?