Roll a ball on a flat floor. When it stops, measure how much distance it has traversed using a measuring tape.

Now roll a ball on the grass lawn. Similarly, measure the distance. 

In which case does the ball face more resistance?

Roll a ball on a flat floor. When it stops, measure how much distance it has traversed using a measuring tape.

Now roll a ball on the grass lawn. Similarly, measure the distance.

What will happen if there is no resistance against the motion of the ball?

Put a book on the table.

Now push the book towards the right by your left hand.

In which direction does the book move?

Put a book on the table.

Now push the book towards left by your right hand.

In which direction does the book move?

Push the book with both hands in the opposite directions by putting two hands on two sides of the book. Push in such a way that the book does not move in any direction. Think why does the book not move in any direction?

Push the book in both hands in the opposite directions by putting two hands in two sides of the book. Push in such a way that the book does not move in any direction.

If the push of your left hand was greater than the push of your right hand, what would have happened?

If Ranjana does not push her science book on the table nor anybody does it, will her science book remain in that position forever?

Open the vacant drawer of the table. Put the pencil inside it as shown in the figure. Now place the pencil inside the drawer in such a way that you can see it. Close the drawer forcefully. Open it again.

What is happening? In which direction is the pencil rolling while opening the drawer?