When does friction in a car becomes positive?

[chronocross_xp]

when does friction in a car becomes positive? in a dry surface and i na wet surface and on ice.

 

[ZapperZ]

when does friction in a car becomes positive? in a dry surface and i na wet surface and on ice.

You should know why this question doesn't make sense. What you call "positive" and "negative" are really arbitrary. It is in reference to the coordinate axis that YOU (or anyone else) set up. If the frictional force happens to be in the same direction as what you call "positive x-axis", for example, then it is positive!

Maybe, indirectly, the proper setting up of coordinate axis could be the source of your problem. I would recommend looking at one of the tutorials that we have on here to see if this is something you should understand first.

Zz.

 

[quicknote]

Friction in a car becomes positive when the force of friction between the tires and the road surface is greater than the opposing forces, such as the force of gravity or the force of the engine pushing the car forward. This typically occurs when the car is moving on a dry surface, as there is more traction between the tires and the road. However, on a wet surface or on ice, the presence of water or ice reduces the traction and can cause the force of friction to become weaker, making it more difficult for the car to move forward. In these cases, the force of friction may not be strong enough to overcome the opposing forces, leading to a loss of control or slipping of the car. Therefore, it is important for drivers to adjust their driving techniques and use caution when driving in wet or icy conditions to maintain positive friction and ensure safe driving.