Newton law of motion 

 What is it? where to use it? What are those laws?
- As we all know Sir Isaac Newton was the wonderful scientist in this world
-This scientist had a very great and huge research in his life
- As we can see behind every possible research there was a name called Isaac Newton
- In this also newton found out three laws regarding motion that we see in our day to day life .so now    let study this law in a scientific manner .

So lets start the concept of Newtons law of motion
There are three law given by Newton are as follows

1) Newton first  law of motion
-This law state that "a body is said to be in the state of rest or in state of motion unless or until an external force is act upon the body "
- To know what actually it mean let take an example.
- Suppose a boy push a car what will happen it run in the direction of push and follow the same path    right. But if he want to stop or change the direction of car he have to apply an external force on that    car.This is example of a moving body similar to this if this car is stable or standing on the surface        and he want to move this car then here also he have apply an external force on that car.
- This nothing but newton first law .

2) Newton second law of motion 
-This law state that" The rate of change of momentum of a body is directly proportional to force applied and this change in momentum takes place in direction of the applied force " .
-The acceleration of an object depend directly upon the object and inversely upon the mass of object --So as the force on object is increase ,acceleration of an object is increase. As the mass of an object is increase the acceleration of object is decreased.
-Example of Newton second law of motion
1) If same is use to push a truck and push a car the car will have more acceleration than the truck because of less mass
2) It is easy to push an empty cart than a full one
3) Designing the racer bike or car to increase their speed by reducing weight

3) Newton Third law of motion 
- This law state that "for every action there is equal , opposite ,and instantaneous reaction "
- This law simply mean that for every action there is always be a same reaction but just in a opposite    direction
- To understand this concept let see the following example
1) Best and simple example is if you slap on the somebody without a reason then reply from the other side will be same i.e. he or she also slap you
2) Push a pendulum in the direction with some force
3) drop a ball with some force the bonce will be same

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