Friction and Roads: Understanding the Effects of Different Surfaces on Car Movement

Which road would exert the LEAST amount of friction on a car?

A: asphalt road

B: gravel road

C: icy road

D: sandy road

Answer:

The road that would exert the LEAST amount of friction on a car is icy road.

The force that counteracts the relative motion or propensity of motion between two surfaces that are in touch is known as friction. An icy road would typically have the least amount of friction on a car of the options presented. This is so that the car's tires don't make as much touch and interaction with the road as they would on a smooth, slippery surface like ice. As a result, there would be little contact between the car's tires and the icy road, making it challenging to retain control and traction.

Due to their textured surface, asphalt roads (option A) have more traction; gravel roads (option B) also have some traction; and sandy roads (option D) can have various levels of friction depending on the type and condition of the sand. However, icy roads tend to have the least friction, making them particularly hazardous for driving.

It is important for drivers to be cautious when driving on icy roads to avoid accidents and ensure their safety. Understanding the concept of friction and how it applies to different road surfaces can help drivers make informed decisions while on the road.