Answer:
Ye I think all of the above is good
Step-by-step explanation:
Friction can be a useful force because it prevents our shoes slipping on the pavement when we walk and stops car tyres skidding on the road. When you walk, friction is caused between the tread on shoes and the ground. This friction acts to grip the ground and prevent sliding.
Friction can slow things down and stop stationary things from moving. In a frictionless world, more objects would be sliding about, clothes and shoes would be difficult to keep on and it would be very difficult for people or cars to get moving or change direction.
Friction- Drag Force
Friction drag force causes objects to slow down as they move through a fluid, such as air or water. Drag force is especially dependent on the speed of an object. As an object's speed increases, the drag force from the fluid increases exponentially.
When Writing With A Pencil
Friction is helping you get something done. It rubs off lead particles, which makes your writing or your picture visible. You can decrease the amount of friction by sharpening your pencil. This lessens the amount of one of the two rubbing surfaces.
Frictional force helps us to write using chalk on black board.