Unfortunately your answer is wrong.
The behaviour of the objects has nothing to do with friction. A mechanical force, which counteracts the movement of a body, is called friction.

The fact that loose objects move forwardly while braking can be explained by inertia .

All objects in the car are in the same state of movement and move with the velocity of the car. If one slows down now, the brake force will act on the car and on all bodies that are firmly connected with it. These bodies slow down just like the car and come to rest with it. But there is no brake force transferred on loose objects in the car. Therefore they do not change their state of movement and move on just in the same direction as before. So they move towards the front window in the car.