So my friend and I were having a discussion at the bar and he mentioned he didnt believe in Newtonian mechanics completely. I asked why and he said:
Well i don't quite understand the conservation of energy, if a car is travelling around 50 mph and hits a massive block of sponge, then in what way is the energy dissipated in the sponge? It will bounce off of it but what happens to the rest of the energy? It doesnt make much sound or heat?
My argument was that the sponge has many pockets of air within and the energy of the car pushes the air out of them and compresses them. Also, that the sponges molecular structure may have lots of room to absorb energy...
PLEASE ENLIGHTEN ME!