Quote:
|
Originally Posted by tik-4d
if both vehicles are travelling at 100 kph and collide head on, the total force will be equal to a crash at 200 kph, however because the two vehicles each weigh differently, the force of the impact is spread accordingly.
using momentum (mass)x(final velocity) and (mass)x(initial velocity) you can calculate the change momentum of each vehicle and thus finding the final veloctiy after the crash.
on a head on collison (mass)x(final velocity) and (mass)x(initial velocity) of one vehicle must eqaul the same of the other vehicle, then we can find the unknown variables in the eqaution.
from my calculations, just after the impact the 3ton 4wd is still travelling at 20.85 m/s while the 1ton hatchback is travelling at 13.9 m/s in the opposite direction. during the impact, the 4wd will exert a net result of twice the momentum of the hatchback.
i could be wrong though i'm pretty sure i'm right, don't hold me to it.
|
This has been done to death several times.
The 200km combined crash speed IS COMPLETELY MISLEADING and is commonly used by "road safety freaks" to beat up an emotional reaction.
There is almost no difference between a vehicle hitting a brick wall at 100km/h and hitting an oncoming vehicle of similar mass at 100km/h.
If the oncoming vehicle has a greater mass them the first vehicle will be accellerated backwards.
For it to be a 200km/h crash the first vehicle would have to be accellerated to 100km/h in the opposite direction........