Let's Answer
A. Write whether gravitational or frictional force is working in the following examples
1. A man throwing a stone upwards
2. A girl walking on the floor...
3. A leaf falling down the tree
4 A basketball being thrown inside the basket
5. A man pushing a car
B. Give one reason why.
1. Everything that is thrown upwards always comes down.
2. It is easier to move on a smoother surface than a rough one.
Answers
Answer:
3 A leaf falling down the tree
Answer:
1. A man throwing a stone upwards - gravitational force
2. A girl walking on the floor.- frictional force
3. A leaf falling down the tree - gravitational force
4 A basketball being thrown inside the basket - gravitational force
5. A man pushing a car - frictional force
B. Give one reason why.
1. Everything that is thrown upwards always comes down.
Answer :- Gravitational force is the force with which the Earth pulls everything towards itself. So, if an object is thrown up, it slows down and then comes down because of the gravitational force of the Earth.
2. It is easier to move on a smoother surface than a rough one.
Answer:- It is easier to walk on a rough surface than on a smooth surface . This is because a rough surface offers more friction and It is the friction between the surface and our feet that helps us to walk . So it is more easy to walk on a rough surface due to more Friction offered by it