How do textures of objects affect the friction produce when two objects are in contact with each other?

Simple machines can a. increase force only b. decrease force only c. increase or decrease force

The photo shows sugar dissolved into a solution with excess sugar at the bottom of the jar this type of solution is classified as a. unsaturated b. compound c. saturated d. plasma

Acar is traveling 35 mph on a smooth surface . if a balanced force is applied to the car what happens?