Speaking of basic physics, Force = Mass * Acceleration. Increase the mass of an object, you increase its force. A 2000 lb horse charging into a 200 lb man is going to crush the man.Yes, that's the point I keep bringing when people start with why I can't ram footmen to death with my horse. There is this thing called physic and action-reaction law. Collision works both ways, it damages object been collided to but also object that collides and with equal force.
Yes, this is why when a train runs into a car, the train is destroyed... Or why a defensive lineman is afraid of the kicker...So in case of the truck and car colliding, more portion of the force of the impact will cause damage to the truck, because truck is harder to displace then a car.
I've taken plenty of physics courses in college, and all of your posts on the subject are incoherent rambling. That you pretend to be an expert on this subject suggests to me that you are just as uninformed about everything else.