Newton’s 3rd law of motion – Definition, Examples, FAQ
Hello students we are familiar with Newton’s 1st and 2nd law of motion. It helps us to understand the concept of force. The formula for force can be given as,
F= m.a
Where m= mass of object and, a= acceleration of object
Newton’s third law helps us to understand the action-reaction pair that forms between interacting bodies.
Newton’s third law states that ‘for every action force, there is equal, opposite and instantaneous reaction force.’
During the reaction, the direction of velocity of object is always gets reversed so as to reverse the direction of force too.
The action and reaction forces act on two different bodies. Hence the resultant force in this case does not become zero.
Following are some examples of Newton’s 3rd law of motion.
1.) Projection of satellite
2.) Recoil of rifle
3.) Bouncing back of ball from the wall
4.) A horse pulls a cart
5.) a hammer pushes a nail
6.) magnets attract paper clip
Important Faq
Q.1) Does the momentum of object changes during collision?
Answer: According to Newton’s third law, action-reaction forces acts instantaneously on two objects. In this case the velocity of object gets reversed in direction, which changes the momentum of object.
Q.2) What are importance of Newton’s 3rd law of motion?
Answer: Newton’s third law is useful for figuring out which forces are external to a system. Due to which the mechanics can be explained in detailed.
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