Question

Divya observed a horse pulling a cart. She thought that cart also pulls the horse with same force in opposite direction. As per third law of motion the cart should not move forward. But her observation of moving cart raised some questions in her mind. Can you guess what questions are raised in her mind?

Answer 1

Some questions that would have raised in the mind of Divya are

1) What makes the cart move forward even if the cart pulls the horse back.

2) Does Newton Third law of motion applicable to this condition?

3) What are the forces on the cart?

4) Which forces are greater so that net force is making the cart move ?

5) Net force on the system is zero or not?

6) Are horse and cart exert force on each other, or there are any other forces ?

Answer 2

Answer:

the questions may raise in her mind are:

1) How the cart moves,if newton's third law is valid?

2) Is the force exerted by horse more than the force exerted by cart?

3) Is any other force acts on cart to move it?

4) Is the force exerted by cart on the horse negligible?

           I hope the answer is clear !