if two identical cars hit head on at 35 would that collision be the same as a car hittin a wall at 70 or 35?

Question

if two identical cars collide head on while both are traveling at 35 mph would the wreck be the same as:

the same car hitting a wall and stopping dead at 35 mph - or

the same car hitting a wall and stopping dead while doing 70?

given all variables are taken out and the wall is the same mass as the car which one would be the closest to the head on collision

Answer 1

70

Answer 2

The impact would be very close to hitting a wall at 70. However there are variables. The wall is a flat object and deflection is going to be one sided. The front end of a car is multi faceted and will result in a variety of deflections so the damage could vary widely. Consider that the velocity is the same but the object you are striking is vastly different. Cars are crushable, walls generally are not. The wall is unlikely to move backwards very much depending on the type of construction. The car will move backwards and absorb some of the kinetic energy.

Answer 3

A) In theory they might desire to come to an entire end yet momentum and how they deform randomly usually effects on them rotating around one yet another on the area of effect. 2) mixed collision speed certainly would be 120mph.

Answer 4

its the car hitting a wall at 70...coz according to the fomula ...the relative speed of the car= speed of car (a) - {- speed of car (b)}
which equals 30-{-30}
=>30 +30
= 70


P.S
{- speed of car (b)} - speed of car b is taken negative as it is in opposite direction of car a

Answer 5

well, i would guess 70. (not at all sure) only because i would think you would have to take into account the force exerted by the other car coming at you in the opposite direction. dunno.