Answer:
Explanation:
Advantages/uses/helpful ;
•Being able to walk across a surface without slipping. This is static friction.
•Writing on a piece of paper with a pencil or a pen. This is sliding friction.
•Driving a car across the road surface. This is rolling friction.
Disadvantage/hurts you;
•Static friction must be overcome, by either muscle tension or gravity , in order to move. Once moving, kinetic friction acts to oppose motion, cause wear on joint surfaces, generate thermal energy , and make the body less efficient.
•Friction produces unnecessary heat leading to the wastage of energy.
