Question

In accordance of newton third law of motion which of the following statements are true:
(A) Actions and reactions never balance each other.
(B) This law is applicable whether the body is at rest or in motion.
(C) For appearance of actions and reactions, physical contact is not necessary.
(D) All of these.

Answer 1

Hint A force is push of pull that acts upon an object due to its interaction with another object. These two forces applied between two objects are called action and reaction. Newton's third law of motion states that, for every action applied on a body there is equal and opposite reaction applied on the body.

Complete step by step solution
A force is a push of pull that acts upon an object due to its interaction with another object. These two forces applied between two objects are called action and reaction. Newton's third law of motion states that, for every action applied on a body there is equal and opposite reaction applied on the body.
Means action and reaction always balance each other. Then options A is incorrect.
To produce reaction between two objects there must be physical contact between these two objects. Then option C is also incorrect.
This law can be applicable whether the object is at rest or in motion.

Hence the correct answer is option B.

Note Newton laws are applicable on all objects whether they are at rest or in motion. But reaction occurs only when two objects are on physical contact for example electrostatic force or magnetic force.