Differance between Momentum and Impulse

Momentum:

                  Moving object possesses a quality virtue of which it experts a force on anything that tries to stop it.The faster the object is traveling, the harder to stop it.If two object moves with same velocity, then it is difficult to stop the massive of the two.
By Newton, this quality of moving body was called the quantity of motion of the body. this is now called linear momentum of body.

Definition of momentum:

                  the product of mass and velocity of body is called linear momentum.

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Inertia

                The property of an object tending to maintain the state of rest or state of uniform  motion is referred to as the object's inertia.
                The more is the inertia, the stronger is this tendency in the presence of a force.
thus,
                "The mass of the object is a quantitative measure of its inertia".
we can says Newtons first law of motion called law of inertia.newtons first law is that
                 A body at rest will remain at rest, and a body moving uniform velocity will continue to do so, unless acted on by some unbalanced external force.This is also known as law of inertia.

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Scalars and vectors

what is scalars

                  Physical quantities like as length, area, volume and mass can be completely
described by a single real number. therefore,  these quantities are describable by giving
only a magnitude, they are called scalars.then we can says
                          "Physical quantities which require only magnitude are called scalars".
Examples: length, area, volume, mass, density, pressure,work,power, etc. 

what is vectors

               Physical quantities like as displacement, velocity, force and acceleration require both a magnitude and a direction to completely describe them.  Such quantities are called vectors.then we can says
                           "Physical quantities which require both magnitude and direction for their complete

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what is physics definition

The branch of science which deals with the study  of matter and energy and the relationship between them is called physics.

we can also called about what is physics  The study of physics involves investigation of such things as the laws of motion,the structure of space and time,the nature and type of forces that hold different materials
together, the interaction between different particles, the interaction of electromagnetic radiation with matter and so on.

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