Sankarlal Nunghanba Meitei

 Mass - The total amount of matters which constitutes a body is termed as the mass of the body.            If we discuss about the sub-atomic particles, particles, atoms or molecules, elementary particles etc., such smallest particles built up any substance or body which found in the nature. Such smallest sub-particles have their own characteristics which can account the physical properties like mass, density, volume, energy, etc. For example- if we take an elementary particle, like the electron or proton has its own mass, electrical property, its orientation etc., constitutes any substance with the neutron particle. We also can observed that such elementary particles (like electrons, protons, and neutrons) which took a major role to build a substance made up by other tiny charged quark particles after sub-divided them in the different experiments. So, we concluded that the term 'mass' is the net sum of all particles which contain to the whole bod...

 Force is the (physical) quantity which can change its initial state of a mass body whether in the uniform motion or at the rest.            From daily experience, we observed that the motion of a body is the net result of interaction with other bodies around it. So, a net interaction in quantitatively produced as the concept of the term 'force' ; e.g.- When a player kicks the football, the football starts to move along the direction of the feet of the player. This football behaves in the motion state is due to the net result of interaction of the player with it. Here the football gets a rapid change in its initial momentum of the football due to the interaction of the player's feet with it. This suddenly change in momentum is directly related to a net quantity which produced by the player's feet termed as 'force', and gets the football in a motion state as a net result of action and reaction, (Every action has an equal and opposite reaction - N...