Here's why:
* Inertia is the tendency of an object to resist changes in its motion. It's directly proportional to the object's mass.
* Mass is the amount of matter an object contains.
* A larger car has more mass than a smaller car.
Therefore, the larger car, with its greater mass, will have greater inertia and resist changes in its motion more strongly than the smaller car, even if they are moving at the same speed.
