Two cars collide head on while each is traveling at 60km/h .Suppose all their kinetic energy is transformed into the thermal energy of the wrecks. What is the temperature increase of each car?You can assume that each car's specific heat is that of iron.

The  temperature rise

Explanation:

From the question we are told that

  The  speed is  

Generally according to the law of energy conservation we have that

   The  kinetic energy  =  increase in the internal energy of the car

i,e          

Here   of  iron is  

      So  

=>        

when heated, the valance electrons increased their speed and transferred the heat from electron to electron.   i just took the test.