Motion of a screw driver is _____.

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.

Why does the ball fail to travel the same distance on the grass as that on the floor?

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.

Does it face any resistance while rolling? Did it stop due to its facing some kind of resistance while rolling?

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?