Contact Forces

Q.

We use horses to draw carriages because they exert less frictional force.

1. True
2. False

Q.

If a body is pushed along a surface, it comes to rest after travelling some distance. The force which is responsible for stopping the motion of the body here is called ___

Q. Explain how inertia is used to dust a floormat and to remove water drops from a wet cloth.

Q. It is easy to push an empty box at rest than the same box full of books, because:

1. Empty box has more inertia.
2. Box full of books have less inertia.
3. Empty box and box full of books have same inertia.
4. Empty box has less inertia.

Q.

What is a contact force? Give one example for the same.