Newton's laws of motion

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Newton's laws of motion-related with the motion of an object to the force acting on it. There are three laws of newton are together laid the foundation for classical mechanics. They all describe the relationship between the body and the force acting upon the body. Let us check it out one by one below. 

Newton's first law of motion: 

The first law of Newton states that an object continues to remain in the state of rest or uniform motion in a straight line unless acted upon by an external force. It is because of inertia, that object will remain in their state of motion unless a force acts to change the motion. 

Example: Wearing a seat belt while driving a car. If any accident occurs, or if brakes are applied to the car suddenly, the body will tend to continue its inertia and move forward. 

Newton's second law of motion: 

The second law of Newton states that the rate of change of momentum or acceleration of a system is directly proportional to and in the same direction in which the external force acts on the system, and inversely proportional to its mass.

 Example: To push a truck and a car, you apply the same force, the car will have more acceleration than the truck, because the car has less mass.

Newton's third law of motion: 

The third law of Newton states that every action, there is an equal and opposite reaction. In other words every interaction, there is a pair of forces acting on the two interacting bodies.  

Example: Bouncing a tennis ball from the ground

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