Answer :
The statement that describes friction is that it is perpendicular to the surfaces that rub together.
What is a friction?
It is defined as a type of force that prevents two smooth surfaces from sliding together on each other. It is also a strong force that opposes motion when two surfaces come in contact with each other.
Some different methods to reduce friction are:
- Application of lubricant to surfaces
- Streamlined bodies; this goes a long way in preventing friction between two bodies.
- Decrease in weight; reducing the amount of weight on a substance can also help to reduce friction
- Applying wheels to objects that move/roll on the ground.
Therefore, the Option A is right.
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