What factors can affect friction?

Answer 1

The magnitude of frictional force depends on the surfaces that are in contact and the force pushing them together. This force is usually related to the weight of the object or objects. Surfaces that appear smooth can be rough at the microscopic level, having many ridges and grooves. The ridges of each surface can get stuck in the grooves of the other. In fluid friction, the force depends upon the shape and speed of an object as it moves through air, water, or other fluid. Two surfaces in contact attract one another at the molecular level, forming chemical bonds. These bonds can prevent an object from moving, even when it is pushed. If an object is in motion, these bonds form and release but take energy away from the motion of the object.

Answer 2

First one is the shape of the race car, a flat boxy surface is perpendicular to the air thus the air's exerted force is perpendicular thus it directly slows the car down. The other factor is speed, the friction due to air is directly proportional to the speed of the object moving through air, thus the faster the car goes the higher the friction (seems logical doesn't it? Move your hand through the air, which way do you feel more wind? Moving your hand slowly or quickly?).

Answer 3

the factors that affect friction is:

1.rough surface

2.smooth surface

Answer 4

How rough the surface is and the pressure that is being put on it