Question

Study the pictures given below:

(A)	(B)
Stationary Ball	Moving Ball

Based on your above study and your knowledge, answer the following questions:

1. Which law of motion will be applied to initiate motion of the ball as depicted in illustration (A)?
2. In illustration (B) which force is acting upon the ball to slow it down?
3. Which law of motion will determine the quality of bounce?
4. ____ of an object directly depends upon the mass of the object and net force applied on it.

OR

"When a cricket ball is moving with a certain velocity, the player has to apply retarding force to bring the ball at rest in his hands." Which Newton's Law is applied in this illustration?

Answer 1

1. Newton's first law of motion (Law of Inertia) will be applied to initiate motion of the ball as depicted in illustration (A).
2. Frictional or gravitational force is acting upon the ball to slow it down.
3. Newton's third law of motion (Law of action and reaction) will determine the quality of bounce.
4. A change in velocity (acceleration) of an object directly depends upon the mass of the object and net force applied on it.

OR

Newton's second law, (Law of acceleration) is applied in this illustration.