Very Short Answer Questions
Why do the soles of our shoes wear out gradually?
2.
Why are the tyres of vehicles (such as cars) made corrugated and rough?
3. What is the direction of frictional force?
4. What enables us to
us to fix nails in the walls? sun
When is there more friction between a car
tyre and a road-on a sunny day or on a rain
and wint
5
Answers
Explanation:
1.When the soles of shoes rub against the rough surface of road, then tiny pieces of the soles keep on breaking off slowly due to which the soles of our shoes wear out gradually. ... The shoes get damaged and become unfit to wear
2.The tyres of the vehicles are usually made rough and corrugated. This is mainly done to increase the friction between the road and the tyre
3.The frictional force is the other component; it is in a direction parallel to the plane of the interface between objects
Answer:
4. It is the frictional force that allows us to fix a nail in a wall. It is the friction between the surface of the nail and the wall that keeps the nail intact with the wall.
5. This is because when the rain the road becomes wet and it reduces the friction so there is more friction between a car and road on sunny day than a rainy day. This happens because the water forms a layer on road and reduces friction,the water act as a lubricant on road.
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