(May 6, 2013 at 3:12 pm)mo66 Wrote:(May 6, 2013 at 2:16 pm)John V Wrote: Yes, I know, that's why it doesn't compare well with the situation at hand. A head-on collision between two vehicles each going 50 does more damage than if the same vehicles are doing 50 and 10 respectively.Eh, once again, the comparison was with a sturdy wall, not a car travelling at 10. If you're trying to argue against the physics, you won't win. You're thinking about momentum whereas the discussion is about velocity.
On the other hand, this case in particular had a car going against a bike.
A car weighs about 1000kg... a bike, a mere 200kg.
If the speeds were comparable, we still have a net momentum in the direction of the car.... of about 4/5 of the car's speed.
