Final answer:
Tire chains are most effective on heavy snow, as they provide increased traction and friction, much like the grip provided by sports shoes in athletic activities. The concept of friction is also critical in vehicle safety concerning stopping distances on various surfaces.option c is correct.
Step-by-step explanation:
The subject question asks about the effectiveness of tire chains in various conditions. Tire chains are most effective on heavy snow. The chains provide increased traction by biting into the snow and creating more friction, which prevents the vehicle from slipping. Another example where more friction is desirable is in sports, such as basketball or running, where shoes with good grip help athletes maintain control and prevent slipping on the court or track surfaces.
Friction is essential for vehicles to brake properly. In physics problems, the coefficient of friction (μ) is often used to calculate the stopping distance on different road surfaces. For example, a car on dry concrete will have a higher coefficient of friction and therefore a shorter stopping distance compared to wet concrete or ice.