Question

mention its three significance of Newtons third low of motion​

Answer 1

■◇■◇■◇■◇■◇■◇■◇

Newton's third law is: For every action, there is an equal and opposite reaction. 

■◇■◇■◇■◇■◇■◇■◇

This helps us to move, Newton's 3rd law of motion is applicable wherever there is action-reaction force pair.

■◇■◇■◇■◇■◇■◇■◇

¤Examples.

1. shooting with a pistol
2. collision
3. rocket propelling
4. walking

Answer 2

Newton's third  law is for every acction there is an equal and opposite reaction . The statement means that is every interaction  there is a pair of force acting of the two interacting  objects. The size of the force on the first object equals size of the force on the second obect.